;+ ; NAME: ; ATV ; ; PURPOSE: ; Interactive display of 2-D images. ; ; CATEGORY: ; Image display. ; ; CALLING SEQUENCE: ; atv [,array_name OR fits_file] [,min = min_value] [,max=max_value] ; [,/linear] [,/log] [,/histeq] [,/block] ; [,/align] [,/stretch] [,header = header] ; ; REQUIRED INPUTS: ; None. If atv is run with no inputs, the window widgets ; are realized and images can subsequently be passed to atv ; from the command line or from the pull-down file menu. ; ; OPTIONAL INPUTS: ; array_name: a 2-D data array to display ; OR ; fits_file: a fits file name, enclosed in single quotes ; ; KEYWORDS: ; min: minimum data value to be mapped to the color table ; max: maximum data value to be mapped to the color table ; linear: use linear stretch ; log: use log stretch ; histeq: use histogram equalization ; block: block IDL command line until ATV terminates ; align: align image with previously displayed image ; stretch: keep same min and max as previous image ; header: FITS image header (string array) for use with data array ; ; OUTPUTS: ; None. ; ; COMMON BLOCKS: ; atv_state: contains variables describing the display state ; atv_images: contains the internal copies of the display image ; atv_color: contains colormap vectors ; atv_pdata: contains plot and text annotation information ; ; RESTRICTIONS: ; Requires IDL version 6.0 or greater. ; Requires Craig Markwardt's cmps_form.pro routine. ; Requires the GSFC IDL astronomy user's library routines. ; Some features may not work under all operating systems. ; ; SIDE EFFECTS: ; Modifies the color table. ; ; EXAMPLE: ; To start atv running, just enter the command 'atv' at the idl ; prompt, either with or without an array name or fits file name ; as an input. Only one atv window will be created at a time, ; so if one already exists and another image is passed to atv ; from the idl command line, the new image will be displayed in ; the pre-existing atv window. ; ; MODIFICATION HISTORY: ; Written by Aaron J. Barth, with contributions by ; Douglas Finkbeiner, Michael Liu, David Schlegel, ; Wesley Colley, and Jim Brauher. ; First released 17 December 1998. ; ; This version is 1.5.2, last modified 1 August 2006. ; ; For the most current version, revision history, instructions, ; list of known bugs, and further information, go to: ; http://www.physics.uci.edu/~barth/atv ; ;- ;---------------------------------------------------------------------- ; atv startup, initialization, and shutdown routines ;---------------------------------------------------------------------- pro atv_initcommon ; Routine to initialize the atv common blocks. Use common blocks so ; that other IDL programs can access the atv internal data easily. common atv_state, state common atv_color, r_vector, g_vector, b_vector common atv_pdata, nplot, maxplot, plot_ptr common atv_images, $ main_image, $ display_image, $ scaled_image, $ blink_image1, $ blink_image2, $ blink_image3, $ unblink_image, $ pan_image state = { $ version: '1.5.1', $ ; version # of this release head_ptr: ptr_new(), $ ; pointer to image header astr_ptr: ptr_new(), $ ; pointer to astrometry info structure wcstype: 'none', $ ; coord info type (none/angle/lambda) equinox: 'J2000', $ ; equinox of coord system display_coord_sys: 'RA--', $ ; coord system displayed display_equinox: 'J2000', $ ; equinox of displayed coords display_base60: 1B, $ ; Display RA,dec in base 60? imagename: '', $ ; image file name title_extras: '', $ ; extras for image title bitdepth: 8, $ ; 8 or 24 bit color mode? screen_ysize: 1000, $ ; vertical size of screen base_id: 0L, $ ; id of top-level base base_min_size: [512L, 300L], $ ; min size for top-level base draw_base_id: 0L, $ ; id of base holding draw window draw_window_id: 0L, $ ; window id of draw window draw_widget_id: 0L, $ ; widget id of draw widget mousemode: "color", $ ; color, blink, zoom, or imexam track_window_id: 0L, $ ; widget id of tracking window pan_widget_id: 0L, $ ; widget id of pan window pan_window_id: 0L, $ ; window id of pan window active_window_id: 0L, $ ; user's active window outside atv info_base_id: 0L, $ ; id of base holding info bars location_bar_id: 0L, $ ; id of (x,y,value) label wcs_bar_id: 0L, $ ; id of WCS label widget min_text_id: 0L, $ ; id of min= widget max_text_id: 0L, $ ; id of max= widget menu_ids: lonarr(35), $ ; list of top menu items colorbar_base_id: 0L, $ ; id of colorbar base widget colorbar_widget_id: 0L, $ ; widget id of colorbar draw widget colorbar_window_id: 0L, $ ; window id of colorbar colorbar_height: 6L, $ ; height of colorbar in pixels ncolors: 0B, $ ; image colors (!d.table_size - 9) box_color: 2, $ ; color for pan box and zoom x brightness: 0.5, $ ; initial brightness setting contrast: 0.5, $ ; initial contrast setting image_min: 0.0, $ ; min(main_image) image_max: 0.0, $ ; max(main_image) min_value: 0.0, $ ; min data value mapped to colors max_value: 0.0, $ ; max data value mapped to colors draw_window_size: [512L, 512L], $ ; size of main draw window track_window_size: 121L, $ ; size of tracking window pan_window_size: 121L, $ ; size of pan window pan_scale: 0.0, $ ; magnification of pan image image_size: [0L,0L], $ ; size of main_image invert_colormap: 0L, $ ; 0=normal, 1=inverted coord: [0L, 0L], $ ; cursor position in image coords scaling: 0L, $ ; 0=linear, 1=log, 2=histeq offset: [0L, 0L], $ ; offset to viewport coords base_pad: [0L, 0L], $ ; padding around draw base zoom_level: 0L, $ ; integer zoom level, 0=normal zoom_factor: 1.0, $ ; magnification factor = 2^zoom_level centerpix: [0L, 0L], $ ; pixel at center of viewport cstretch: 0B, $ ; flag = 1 while stretching colors pan_offset: [0L, 0L], $ ; image offset in pan window frame: 1L, $ ; put frame around ps output? framethick: 6, $ ; thickness of frame lineplot_widget_id: 0L, $ ; id of lineplot widget lineplot_window_id: 0L, $ ; id of lineplot window lineplot_base_id: 0L, $ ; id of lineplot top-level base lineplot_size: [600L, 450L], $ ; size of lineplot window lineplot_pad: [0L, 0L], $ ; padding around lineplot window cursorpos: lonarr(2), $ ; cursor x,y for photometry & stats centerpos: fltarr(2), $ ; centered x,y for photometry cursorpos_id: 0L, $ ; id of cursorpos widget centerpos_id: 0L, $ ; id of centerpos widget centerbox_id: 0L, $ ; id of centeringboxsize widget radius_id: 0L, $ ; id of radius widget innersky_id: 0L, $ ; id of inner sky widget outersky_id: 0L, $ ; id of outer sky widget magunits: 0, $ ; 0=counts, 1=magnitudes skytype: 0, $ ; 0=idlphot,1=median,2=no sky subtract photzpt: 25.0, $ ; magnitude zeropoint skyresult_id: 0L, $ ; id of sky widget photresult_id: 0L, $ ; id of photometry result widget fwhm_id: 0L, $ ; id of fwhm widget radplot_widget_id: 0L, $ ; id of radial profile widget radplot_window_id: 0L, $ ; id of radial profile window photzoom_window_id: 0L, $ ; id of photometry zoom window photzoom_size: 190L, $ ; size in pixels of photzoom window showradplot_id: 0L, $ ; id of button to show/hide radplot photwarning_id: 0L, $ ; id of photometry warning widget photwarning: ' ', $ ; photometry warning text centerboxsize: 5L, $ ; centering box size r: 5L, $ ; aperture photometry radius innersky: 10L, $ ; inner sky radius outersky: 20L, $ ; outer sky radius headinfo_base_id: 0L, $ ; headinfo base widget id stats_base_id: 0L, $ ; base widget for image stats statboxsize: 11L, $ ; box size for computing statistics statbox_id: 0L, $ ; widget id for stat box size stat_npix_id: 0L, $ ; widget id for # pixels in stats box statxcenter_id: 0L, $ ; widget id for stat box x center statycenter_id: 0L, $ ; widget id for stat box y center statbox_min_id: 0L, $ ; widget id for stat min box statbox_max_id: 0L, $ ; widget id for stat max box statbox_mean_id: 0L, $ ; widget id for stat mean box statbox_median_id: 0L, $ ; widget id for stat median box statbox_stdev_id: 0L, $ ; widget id for stat stdev box statzoom_size: 300, $ ; size of statzoom window statzoom_widget_id: 0L, $ ; widget id for stat zoom window statzoom_window_id: 0L, $ ; window id for stat zoom window showstatzoom_id: 0L, $ ; widget id for show/hide button pan_pixmap: 0L, $ ; window id of pan pixmap default_autoscale: 1, $ ; autoscale images by default? current_dir: '', $ ; current readfits directory graphicsdevice: '', $ ; screen device newrefresh: 0, $ ; refresh since last blink? blinks: 0B, $ ; remembers which images are blinked delimiter: '/' $ ; filesystem level delimiter } nplot = 0 maxplot = 5000 plot_ptr = ptrarr(maxplot+1) ; The 0th element isn't used. blink_image1 = 0 blink_image2 = 0 blink_image3 = 0 end ;--------------------------------------------------------------------- pro atv_startup ; This routine initializes the atv internal variables, and creates and ; realizes the window widgets. It is only called by the atv main ; program level, when there is no previously existing atv window. common atv_state common atv_color ; Read in a color table to initialize !d.table_size ; As a bare minimum, we need the 8 basic colors used by ATV_ICOLOR(), ; plus 2 more for a color map. loadct, 0, /silent if (!d.table_size LT 12) then begin message, 'Too few colors available for color table' atv_shutdown endif ; Initialize the common blocks atv_initcommon osfamily = strupcase(!version.os_family) case osfamily of 'UNIX': state.delimiter = '/' 'WINDOWS': state.delimiter = '\' else: endcase state.ncolors = !d.table_size - 9 if (!d.n_colors LE 256) then begin state.bitdepth = 8 endif else begin state.bitdepth = 24 device, decomposed=0 endelse state.graphicsdevice = !d.name state.screen_ysize = (get_screen_size())[1] ; Get the current window id atv_getwindow ; Define the widgets. For the widgets that need to be modified later ; on, save their widget ids in state variables base = widget_base(title = 'atv', $ /column, /base_align_right, $ app_mbar = top_menu, $ uvalue = 'atv_base', $ /tlb_size_events) state.base_id = base tmp_struct = {cw_pdmenu_s, flags:0, name:''} top_menu_desc = [ $ {cw_pdmenu_s, 1, 'File'}, $ ; file menu {cw_pdmenu_s, 0, 'ReadFits'}, $ {cw_pdmenu_s, 0, 'WritePS'}, $ {cw_pdmenu_s, 0, 'WriteTiff'}, $ {cw_pdmenu_s, 2, 'Quit'}, $ {cw_pdmenu_s, 1, 'ColorMap'}, $ ; color menu {cw_pdmenu_s, 0, 'Grayscale'}, $ {cw_pdmenu_s, 0, 'Blue-White'}, $ {cw_pdmenu_s, 0, 'Red-Orange'}, $ {cw_pdmenu_s, 0, 'Green-White'}, $ {cw_pdmenu_s, 0, 'Rainbow'}, $ {cw_pdmenu_s, 0, 'BGRY'}, $ {cw_pdmenu_s, 0, 'Stern Special'}, $ {cw_pdmenu_s, 2, 'ATV Special'}, $ {cw_pdmenu_s, 1, 'Scaling'}, $ ; scaling menu {cw_pdmenu_s, 0, 'Linear'}, $ {cw_pdmenu_s, 0, 'Log'}, $ {cw_pdmenu_s, 2, 'HistEq'}, $ {cw_pdmenu_s, 1, 'Labels'}, $ ; labels menu {cw_pdmenu_s, 0, 'TextLabel'}, $ {cw_pdmenu_s, 0, 'Contour'}, $ {cw_pdmenu_s, 0, 'Compass'}, $ {cw_pdmenu_s, 0, 'ScaleBar'}, $ {cw_pdmenu_s, 0, 'EraseLast'}, $ {cw_pdmenu_s, 2, 'EraseAll'}, $ {cw_pdmenu_s, 1, 'Blink'}, $ {cw_pdmenu_s, 0, 'SetBlink1'}, $ {cw_pdmenu_s, 0, 'SetBlink2'}, $ {cw_pdmenu_s, 2, 'SetBlink3'}, $ {cw_pdmenu_s, 1, 'ImageInfo'}, $ ;info menu {cw_pdmenu_s, 0, 'Photometry'}, $ {cw_pdmenu_s, 0, 'Statistics'}, $ {cw_pdmenu_s, 0, 'ImageHeader'}, $ {cw_pdmenu_s, 0, '--------------'}, $ {cw_pdmenu_s, 0, 'RA,dec (J2000)'}, $ {cw_pdmenu_s, 0, 'RA,dec (B1950)'}, $ {cw_pdmenu_s, 0, '--------------'}, $ {cw_pdmenu_s, 0, 'RA,dec (J2000) deg'}, $ {cw_pdmenu_s, 0, 'Galactic'}, $ {cw_pdmenu_s, 0, 'Ecliptic (J2000)'}, $ {cw_pdmenu_s, 2, 'Native'}, $ {cw_pdmenu_s, 1, 'Help'}, $ ; help menu {cw_pdmenu_s, 2, 'ATV Help'} $ ] top_menu = cw_pdmenu(top_menu, top_menu_desc, $ ids = state.menu_ids, $ /mbar, $ /help, $ /return_name, $ uvalue = 'top_menu') track_base = widget_base(base, /row) state.info_base_id = widget_base(track_base, /column, /base_align_right) buttonbar_base = widget_base(base, column=2) state.draw_base_id = widget_base(base, $ /column, /base_align_left, $ uvalue = 'draw_base', $ frame = 2) state.colorbar_base_id = widget_base(base, $ uvalue = 'cqolorbar_base', $ /column, /base_align_left, $ frame = 2) min_base = widget_base(state.info_base_id, /row) state.min_text_id = cw_field(min_base, $ uvalue = 'min_text', $ /floating, $ title = 'Min=', $ value = state.min_value, $ /return_events, $ xsize = 12) state.max_text_id = cw_field(state.info_base_id, $ uvalue = 'max_text', $ /floating, $ title = 'Max=', $ value = state.max_value, $ /return_events, $ xsize = 12) tmp_string = string(1000, 1000, 1.0e-10, $ format = '("(",i5,",",i5,") ",g12.5)' ) state.location_bar_id = widget_label (state.info_base_id, $ value = tmp_string, $ uvalue = 'location_bar', frame = 1) tmp_string = string(12, 12, 12.001, -60, 60, 60.01, ' J2000', $ format = '(i2,":",i2,":",f6.3," ",i3,":",i2,":",f5.2," ",a6)' ) state.wcs_bar_id = widget_label (state.info_base_id, $ value = tmp_string, $ uvalue = 'wcs_bar', frame = 1) state.pan_widget_id = widget_draw(track_base, $ xsize = state.pan_window_size, $ ysize = state.pan_window_size, $ frame = 2, uvalue = 'pan_window', $ /button_events, /motion_events) track_window = widget_draw(track_base, $ xsize=state.track_window_size, $ ysize=state.track_window_size, $ frame=2, uvalue='track_window') modebase = widget_base(buttonbar_base, /row, /base_align_center) modelist = ['Color', 'Zoom', 'Blink', 'ImExam'] mode_droplist_id = widget_droplist(modebase, $ frame = 1, $ title = 'MouseMode:', $ uvalue = 'mode', $ value = modelist) button_base = widget_base(buttonbar_base, row=2) invert_button = widget_button(button_base, $ value = 'Invert', $ uvalue = 'invert') restretch_button = widget_button(button_base, $ value = 'Restretch', $ uvalue = 'restretch_button') autoscale_button = widget_button(button_base, $ uvalue = 'autoscale_button', $ value = 'AutoScale') fullrange_button = widget_button(button_base, $ uvalue = 'full_range', $ value = 'FullRange') dummy_spacing_widget = widget_label(button_base,value='') zoomin_button = widget_button(button_base, $ value = 'ZoomIn', $ uvalue = 'zoom_in') zoomout_button = widget_button(button_base, $ value = 'ZoomOut', $ uvalue = 'zoom_out') zoomone_button = widget_button(button_base, $ value = 'Zoom1', $ uvalue = 'zoom_one') center_button = widget_button(button_base, $ value = 'Center', $ uvalue = 'center') done_button = widget_button(button_base, $ value = 'Done', $ uvalue = 'done') ; Set widget y size for small screens state.draw_window_size[1] = state.draw_window_size[1] < $ (state.screen_ysize - 300) state.draw_widget_id = widget_draw(state.draw_base_id, $ uvalue = 'draw_window', $ /motion_events, /button_events, $ keyboard_events=1, $ scr_xsize = state.draw_window_size[0], $ scr_ysize = state.draw_window_size[1]) state.colorbar_widget_id = widget_draw(state.colorbar_base_id, $ uvalue = 'colorbar', $ scr_xsize = state.draw_window_size[0], $ scr_ysize = state.colorbar_height) ; Create the widgets on screen widget_control, base, /realize widget_control, state.pan_widget_id, draw_motion_events = 0 ; get the window ids for the draw widgets widget_control, track_window, get_value = tmp_value state.track_window_id = tmp_value widget_control, state.draw_widget_id, get_value = tmp_value state.draw_window_id = tmp_value widget_control, state.pan_widget_id, get_value = tmp_value state.pan_window_id = tmp_value widget_control, state.colorbar_widget_id, get_value = tmp_value state.colorbar_window_id = tmp_value ; set the event handlers widget_control, top_menu, event_pro = 'atv_topmenu_event' widget_control, state.draw_widget_id, event_pro = 'atv_draw_event' widget_control, state.pan_widget_id, event_pro = 'atv_pan_event' ; Find window padding sizes needed for resizing routines. ; Add extra padding for menu bar, since this isn't included in ; the geometry returned by widget_info. ; Also add extra padding for margin (frame) in draw base. basegeom = widget_info(state.base_id, /geometry) drawbasegeom = widget_info(state.draw_base_id, /geometry) ; Initialize the vectors that hold the current color table. ; See the routine atv_stretchct to see why we do it this way. r_vector = bytarr(state.ncolors) g_vector = bytarr(state.ncolors) b_vector = bytarr(state.ncolors) atv_getct, 0 state.invert_colormap = 0 ; Create a pixmap window to hold the pan image window, /free, xsize=state.pan_window_size, ysize=state.pan_window_size, $ /pixmap state.pan_pixmap = !d.window atv_resetwindow atv_colorbar widget_control, state.base_id, tlb_get_size=tmp_event state.base_pad = tmp_event - state.draw_window_size end ;-------------------------------------------------------------------- pro atv_colorbar ; Routine to tv the colorbar at the bottom of the atv window common atv_state atv_setwindow, state.colorbar_window_id xsize = (widget_info(state.colorbar_widget_id, /geometry)).xsize b = congrid( findgen(state.ncolors), xsize) + 8 c = replicate(1, state.colorbar_height) a = b # c tv, a atv_resetwindow end ;-------------------------------------------------------------------- pro atv_shutdown, windowid ; routine to kill the atv window(s) and clear variables to conserve ; memory when quitting atv. The windowid parameter is used when ; atv_shutdown is called automatically by the xmanager, if atv is ; killed by the window manager. common atv_images common atv_state common atv_color common atv_pdata ; Kill top-level base if it still exists if (xregistered ('atv')) then widget_control, state.base_id, /destroy ; Destroy all pointers to plots and their heap variables if (nplot GT 0) then begin atverase, /norefresh endif if (size(state, /tname) EQ 'STRUCT') then begin if (!d.name EQ state.graphicsdevice) then wdelete, state.pan_pixmap if (ptr_valid(state.head_ptr)) then ptr_free, state.head_ptr if (ptr_valid(state.astr_ptr)) then ptr_free, state.astr_ptr endif delvarx, plot_ptr delvarx, main_image delvarx, display_image delvarx, scaled_image delvarx, blink_image1 delvarx, blink_image2 delvarx, blink_image3 delvarx, unblink_image delvarx, pan_image delvarx, r_vector delvarx, g_vector delvarx, b_vector delvarx, state return end ;-------------------------------------------------------------------- ; main atv event loops ;-------------------------------------------------------------------- pro atv_topmenu_event, event ; Event handler for top menu common atv_state common atv_images widget_control, event.id, get_uvalue = event_name if (!d.name NE state.graphicsdevice and event_name NE 'Quit') then return if (state.bitdepth EQ 24) then true = 1 else true = 0 ; Need to get active window here in case mouse goes to menu from top ; of atv window without entering the main base atv_getwindow case event_name of ; File menu options: 'ReadFits': begin atv_readfits, newimage=newimage if (newimage EQ 1) then begin atv_getstats atv_settitle state.zoom_level = 0 state.zoom_factor = 1.0 if (state.default_autoscale EQ 1) then atv_autoscale atv_set_minmax atv_displayall endif end 'WritePS' : atv_writeps 'WriteTiff': atv_writetiff 'Quit': atv_shutdown ; ColorMap menu options: 'Grayscale': atv_getct, 0 'Blue-White': atv_getct, 1 'Red-Orange': atv_getct, 3 'BGRY': atv_getct, 4 'Rainbow': atv_getct, 13 'Stern Special': atv_getct, 15 'Green-White': atv_getct, 8 'ATV Special': atv_makect, event_name ; Scaling options: 'Linear': begin state.scaling = 0 atv_displayall end 'Log': begin state.scaling = 1 atv_displayall end 'HistEq': begin state.scaling = 2 atv_displayall end ; Label options: 'TextLabel': atv_textlabel 'Contour': atv_oplotcontour 'Compass': atv_setcompass 'ScaleBar': atv_setscalebar 'EraseLast': atverase, 1 'EraseAll': atverase ; Blink options: 'SetBlink1': begin atv_setwindow, state.draw_window_id blink_image1 = tvrd(true = true) end 'SetBlink2': begin atv_setwindow, state.draw_window_id blink_image2 = tvrd(true = true) end 'SetBlink3': begin atv_setwindow, state.draw_window_id blink_image3 = tvrd(true = true) end ; Info options: 'Photometry': atv_apphot 'ImageHeader': atv_headinfo 'Statistics': atv_showstats ; Coordinate system options: '--------------': 'RA,dec (J2000)': BEGIN state.display_coord_sys = 'RA--' state.display_equinox = 'J2000' state.display_base60 = 1B atv_gettrack ; refresh coordinate window END 'RA,dec (B1950)': BEGIN state.display_coord_sys = 'RA--' state.display_equinox = 'B1950' state.display_base60 = 1B atv_gettrack ; refresh coordinate window END 'RA,dec (J2000) deg': BEGIN state.display_coord_sys = 'RA--' state.display_equinox = 'J2000' state.display_base60 = 0B atv_gettrack ; refresh coordinate window END 'Galactic': BEGIN state.display_coord_sys = 'GLON' atv_gettrack ; refresh coordinate window END 'Ecliptic (J2000)': BEGIN state.display_coord_sys = 'ELON' state.display_equinox = 'J2000' atv_gettrack ; refresh coordinate window END 'Native': BEGIN IF (state.wcstype EQ 'angle') THEN BEGIN state.display_coord_sys = strmid((*state.astr_ptr).ctype[0], 0, 4) state.display_equinox = state.equinox atv_gettrack ; refresh coordinate window ENDIF END ; Help options: 'ATV Help': atv_help else: print, 'Unknown event in file menu!' endcase ; Need to test whether atv is still alive, since the quit option ; might have been selected. if (xregistered('atv', /noshow)) then atv_resetwindow end ;-------------------------------------------------------------------- pro atv_draw_event, event ; top-level event handler for draw widget events common atv_state if (!d.name NE state.graphicsdevice) then return if (event.type EQ 0 or event.type EQ 1 or event.type EQ 2) then begin case state.mousemode of 'color': atv_draw_color_event, event 'zoom': atv_draw_zoom_event, event 'blink': atv_draw_blink_event, event 'imexam': atv_draw_phot_event, event endcase endif if (event.type EQ 5 or event.type EQ 6) then $ atv_draw_keyboard_event, event if (xregistered('atv', /noshow)) then $ widget_control, state.draw_widget_id, /sensitive, /input_focus end ;-------------------------------------------------------------------- pro atv_draw_color_event, event ; Event handler for color mode common atv_state common atv_images ;if (!d.name NE state.graphicsdevice) then return case event.type of 0: begin ; button press if (event.press EQ 1) then begin state.cstretch = 1 atv_stretchct, event.x, event.y, /getcursor atv_colorbar endif else begin atv_zoom, 'none', /recenter endelse end 1: begin state.cstretch = 0 ; button release if (state.bitdepth EQ 24) then atv_refresh atv_draw_motion_event, event end 2: begin ; motion event if (state.cstretch EQ 1) then begin atv_stretchct, event.x, event.y, /getcursor if (state.bitdepth EQ 24) then atv_refresh, /fast endif else begin atv_draw_motion_event, event endelse end endcase widget_control, state.draw_widget_id, /sensitive, /input_focus end ;-------------------------------------------------------------------- pro atv_draw_keyboard_event, event common atv_state ; Only want to look for key presses, not key releases. if (event.release EQ 1) then return if (event.type EQ 5) then begin eventchar = string(event.ch) if (!d.name NE state.graphicsdevice and eventchar NE 'q') then return case eventchar of '1': atv_move_cursor, eventchar '2': atv_move_cursor, eventchar '3': atv_move_cursor, eventchar '4': atv_move_cursor, eventchar '6': atv_move_cursor, eventchar '7': atv_move_cursor, eventchar '8': atv_move_cursor, eventchar '9': atv_move_cursor, eventchar 'r': atv_rowplot 'c': atv_colplot 's': atv_surfplot 't': atv_contourplot 'p': atv_apphot 'i': atv_showstats 'q': atv_shutdown else: ;any other key press does nothing endcase endif ; Starting with IDL 6.0, can generate events on arrow keys: if (event.type EQ 6) then begin case event.key of 5: atv_move_cursor, '4' 6: atv_move_cursor, '6' 7: atv_move_cursor, '8' 8: atv_move_cursor, '2' else: endcase endif if (xregistered('atv', /noshow)) then $ widget_control, state.draw_widget_id, /sensitive, /input_focus end ;------------------------------------------------------------------- pro atv_draw_zoom_event, event ; Event handler for zoom mode common atv_state if (!d.name NE state.graphicsdevice) then return if (event.type EQ 0) then begin case event.press of 1: atv_zoom, 'in', /recenter 2: atv_zoom, 'none', /recenter 4: atv_zoom, 'out', /recenter endcase endif if (event.type EQ 2) then atv_draw_motion_event, event if (xregistered('atv', /noshow)) then $ widget_control, state.draw_widget_id, /sensitive, /input_focus end ;--------------------------------------------------------------------- pro atv_draw_blink_event, event ; Event handler for blink mode common atv_state common atv_images if (!d.name NE state.graphicsdevice) then return if (state.bitdepth EQ 24) then true = 1 else true = 0 case event.type of 0: begin ; button press atv_setwindow, state.draw_window_id ; define the unblink image if needed if ((state.newrefresh EQ 1) AND (state.blinks EQ 0)) then begin unblink_image = tvrd(true = true) state.newrefresh = 0 endif case event.press of 1: if n_elements(blink_image1) GT 1 then $ tv, blink_image1, true = true 2: if n_elements(blink_image2) GT 1 then $ tv, blink_image2, true = true 4: if n_elements(blink_image3) GT 1 then $ tv, blink_image3, true = true else: event.press = 0 ; in case of errors endcase state.blinks = (state.blinks + event.press) < 7 end 1: begin ; button release if (n_elements(unblink_image) EQ 0) then return ; just in case atv_setwindow, state.draw_window_id state.blinks = (state.blinks - event.release) > 0 case state.blinks of 0: tv, unblink_image, true = true 1: if n_elements(blink_image1) GT 1 then $ tv, blink_image1, true = true else $ tv, unblink_image, true = true 2: if n_elements(blink_image2) GT 1 then $ tv, blink_image2, true = true else $ tv, unblink_image, true = true 3: if n_elements(blink_image1) GT 1 then begin tv, blink_image1, true = true endif else if n_elements(blink_image2) GT 1 then begin tv, blink_image2, true = true endif else begin tv, unblink_image, true = true endelse 4: if n_elements(blink_image3) GT 1 then $ tv, blink_image3, true = true $ else tv, unblink_image, true = true 5: if n_elements(blink_image1) GT 1 then begin tv, blink_image1, true = true endif else if n_elements(blink_image3) GT 1 then begin tv, blink_image3, true = true endif else begin tv, unblink_image, true = true endelse 6: if n_elements(blink_image2) GT 1 then begin tv, blink_image2, true = true endif else if n_elements(blink_image4) GT 1 then begin tv, blink_image4, true = true endif else begin tv, unblink_image, true = true endelse else: begin ; check for errors state.blinks = 0 tv, unblink_image, true = true end endcase end 2: atv_draw_motion_event, event ; motion event endcase widget_control, state.draw_widget_id, /sensitive, /input_focus atv_resetwindow end ;------------------------------------------------------------------- pro atv_draw_phot_event, event ; Event handler for ImExam mode common atv_state common atv_images if (!d.name NE state.graphicsdevice) then return if (event.type EQ 0) then begin case event.press of 1: atv_apphot 2: atv_zoom, 'none', /recenter 4: atv_showstats else: endcase endif if (event.type EQ 2) then atv_draw_motion_event, event widget_control, state.draw_widget_id, /sensitive, /input_focus end ;-------------------------------------------------------------------- pro atv_draw_motion_event, event ; Event handler for motion events in draw window common atv_state if (!d.name NE state.graphicsdevice) then return tmp_event = [event.x, event.y] state.coord = $ round( (0.5 > ((tmp_event / state.zoom_factor) + state.offset) $ < (state.image_size - 0.5) ) - 0.5) atv_gettrack widget_control, state.draw_widget_id, /sensitive, /input_focus end ;---------------------------------------------------------------------- pro atv_pan_event, event ; event procedure for moving the box around in the pan window common atv_state if (!d.name NE state.graphicsdevice) then return case event.type of 0: begin ; button press widget_control, state.pan_widget_id, draw_motion_events = 1 atv_pantrack, event end 1: begin ; button release widget_control, state.pan_widget_id, draw_motion_events = 0 widget_control, state.pan_widget_id, /clear_events atv_pantrack, event atv_refresh end 2: begin atv_pantrack, event ; motion event widget_control, state.pan_widget_id, /clear_events end else: endcase end ;-------------------------------------------------------------------- pro atv_event, event ; Main event loop for atv top-level base, and for all the buttons. common atv_state common atv_images common atv_color widget_control, event.id, get_uvalue = uvalue if (!d.name NE state.graphicsdevice and uvalue NE 'done') then return ; Get currently active window atv_getwindow case uvalue of 'atv_base': begin c = where(tag_names(event) EQ 'ENTER', count) if (count EQ 0) then begin ; resize event atv_resize atv_refresh endif end 'mode': case event.index of 0: state.mousemode = 'color' 1: state.mousemode = 'zoom' 2: state.mousemode = 'blink' 3: state.mousemode = 'imexam' else: print, 'Unknown mouse mode!' endcase 'invert': begin ; invert the color table state.invert_colormap = abs(state.invert_colormap - 1) r_vector = reverse(r_vector) g_vector = reverse(g_vector) b_vector = reverse(b_vector) atv_stretchct, state.brightness, state.contrast if (state.bitdepth EQ 24) then atv_refresh end 'restretch_button': atv_restretch 'min_text': begin ; text entry in 'min = ' box atv_get_minmax, uvalue, event.value atv_displayall end 'max_text': begin ; text entry in 'max = ' box atv_get_minmax, uvalue, event.value atv_displayall end 'autoscale_button': begin ; autoscale the image atv_autoscale atv_displayall end 'full_range': begin ; display the full intensity range state.min_value = state.image_min state.max_value = state.image_max if state.min_value GE state.max_value then begin state.min_value = state.max_value - 1 state.max_value = state.max_value + 1 endif atv_set_minmax atv_displayall end 'zoom_in': atv_zoom, 'in' ; zoom buttons 'zoom_out': atv_zoom, 'out' 'zoom_one': atv_zoom, 'one' 'center': begin ; center image and preserve current zoom level state.centerpix = round(state.image_size / 2.) atv_refresh end 'done': atv_shutdown else: print, 'No match for uvalue....' ; bad news if this happens endcase end ;---------------------------------------------------------------------- pro atv_message, msg_txt, msgtype=msgtype, window=window ; Routine to display an error or warning message. Message can be ; displayed either to the IDL command line or to a popup window, ; depending on whether /window is set. ; msgtype must be 'warning', 'error', or 'information'. common atv_state if (n_elements(window) EQ 0) then window = 0 if (window EQ 1) then begin ; print message to popup window case msgtype of 'warning': t = dialog_message(msg_txt, dialog_parent = state.base_id) 'error': t = $ dialog_message(msg_txt,/error,dialog_parent=state.base_id) 'information': t = $ dialog_message(msg_txt,/information,dialog_parent=state.base_id) else: endcase endif else begin ; print message to IDL console message = strcompress(strupcase(msgtype) + ': ' + msg_txt) print, message endelse end ;----------------------------------------------------------------------- ; main atv routines for scaling, displaying, cursor tracking... ;----------------------------------------------------------------------- pro atv_displayall ; Call the routines to scale the image, make the pan image, and ; re-display everything. Use this if the scaling changes (log/ ; linear/ histeq), or if min or max are changed, or if a new image is ; passed to atv. If the display image has just been moved around or ; zoomed without a change in scaling, then just call atv_refresh ; rather than this routine. atv_scaleimage atv_makepan atv_refresh end ;--------------------------------------------------------------------- pro atv_refresh, fast = fast ; Make the display image from the scaled_image, and redisplay the pan ; image and tracking image. ; The /fast option skips the steps where the display_image is ; recalculated from the main_image. The /fast option is used in 24 ; bit color mode, when the color map has been stretched but everything ; else stays the same. common atv_state common atv_images atv_getwindow if (not(keyword_set(fast))) then begin atv_getoffset atv_getdisplay atv_displaymain atv_plotall endif else begin atv_displaymain endelse ; redisplay the pan image and plot the boundary box atv_setwindow, state.pan_pixmap erase tv, pan_image, state.pan_offset[0], state.pan_offset[1] atv_resetwindow atv_setwindow, state.pan_window_id if (not(keyword_set(fast))) then erase tv, pan_image, state.pan_offset[0], state.pan_offset[1] atv_resetwindow atv_drawbox, /norefresh if (state.bitdepth EQ 24) then atv_colorbar ; redisplay the tracking image if (not(keyword_set(fast))) then atv_gettrack atv_resetwindow state.newrefresh = 1 end ;-------------------------------------------------------------------- pro atv_getdisplay ; make the display image from the scaled image by applying the zoom ; factor and matching to the size of the draw window, and display the ; image. common atv_state common atv_images widget_control, /hourglass display_image = bytarr(state.draw_window_size[0], state.draw_window_size[1]) view_min = round(state.centerpix - $ (0.5 * state.draw_window_size / state.zoom_factor)) view_max = round(view_min + state.draw_window_size / state.zoom_factor) view_min = (0 > view_min < (state.image_size - 1)) view_max = (0 > view_max < (state.image_size - 1)) newsize = round( (view_max - view_min + 1) * state.zoom_factor) > 1 startpos = abs( round(state.offset * state.zoom_factor) < 0) ; Use interp & center keywords to congrid for zoomfactor < 1 : ; improvement contributed by N. Cunningham, added 4/14/06 if (state.zoom_factor LT 1.0) then begin tmp_image = congrid(scaled_image[view_min[0]:view_max[0], $ view_min[1]:view_max[1]], $ newsize[0], newsize[1], /center, /interp) endif else begin tmp_image = congrid(scaled_image[view_min[0]:view_max[0], $ view_min[1]:view_max[1]], $ newsize[0], newsize[1]) endelse xmax = newsize[0] < (state.draw_window_size[0] - startpos[0]) ymax = newsize[1] < (state.draw_window_size[1] - startpos[1]) display_image[startpos[0], startpos[1]] = tmp_image[0:xmax-1, 0:ymax-1] delvarx, tmp_image end ;----------------------------------------------------------------------- pro atv_displaymain ; Display the main image and overplots common atv_state common atv_images atv_setwindow, state.draw_window_id tv, display_image atv_resetwindow end ;-------------------------------------------------------------------- pro atv_getoffset common atv_state ; Routine to calculate the display offset for the current value of ; state.centerpix, which is the central pixel in the display window. state.offset = $ round( state.centerpix - $ (0.5 * state.draw_window_size / state.zoom_factor) ) end ;---------------------------------------------------------------------- pro atv_makepan ; Make the 'pan' image that shows a miniature version of the full image. common atv_state common atv_images sizeratio = state.image_size[1] / state.image_size[0] if (sizeratio GE 1) then begin state.pan_scale = float(state.pan_window_size) / float(state.image_size[1]) endif else begin state.pan_scale = float(state.pan_window_size) / float(state.image_size[0]) endelse tmp_image = $ scaled_image[0:state.image_size[0]-1, 0:state.image_size[1]-1] pan_image = $ congrid(tmp_image, round(state.pan_scale * state.image_size[0])>1, $ round(state.pan_scale * state.image_size[1])>1, $ /center, /interp) state.pan_offset[0] = round((state.pan_window_size - (size(pan_image))[1]) / 2) state.pan_offset[1] = round((state.pan_window_size - (size(pan_image))[2]) / 2) end ;---------------------------------------------------------------------- pro atv_move_cursor, direction ; Use keypad arrow keys to step cursor one pixel at a time. ; Get the new track image, and update the cursor position. common atv_state i = 1L case direction of '2': state.coord[1] = max([state.coord[1] - i, 0]) '4': state.coord[0] = max([state.coord[0] - i, 0]) '8': state.coord[1] = min([state.coord[1] + i, state.image_size[1] - i]) '6': state.coord[0] = min([state.coord[0] + i, state.image_size[0] - i]) '7': begin state.coord[1] = min([state.coord[1] + i, state.image_size[1] - i]) state.coord[0] = max([state.coord[0] - i, 0]) end '9': begin state.coord[1] = min([state.coord[1] + i, state.image_size[1] - i]) state.coord[0] = min([state.coord[0] + i, state.image_size[0] - i]) end '3': begin state.coord[1] = max([state.coord[1] - i, 0]) state.coord[0] = min([state.coord[0] + i, state.image_size[0] - i]) end '1': begin state.coord[1] = max([state.coord[1] - i, 0]) state.coord[0] = max([state.coord[0] - i, 0]) end endcase newpos = (state.coord - state.offset + 0.5) * state.zoom_factor atv_setwindow, state.draw_window_id tvcrs, newpos[0], newpos[1], /device atv_resetwindow atv_gettrack ; Prevent the cursor move from causing a mouse event in the draw window widget_control, state.draw_widget_id, /clear_events atv_resetwindow end ;---------------------------------------------------------------------- pro atv_set_minmax ; Updates the min and max text boxes with new values. common atv_state widget_control, state.min_text_id, set_value = string(state.min_value) widget_control, state.max_text_id, set_value = string(state.max_value) end ;---------------------------------------------------------------------- pro atv_get_minmax, uvalue, newvalue ; Change the min and max state variables when user inputs new numbers ; in the text boxes. common atv_state case uvalue of 'min_text': begin if (newvalue LT state.max_value) then begin state.min_value = newvalue endif end 'max_text': begin if (newvalue GT state.min_value) then begin state.max_value = newvalue endif end endcase atv_set_minmax end ;-------------------------------------------------------------------- pro atv_zoom, zchange, recenter = recenter common atv_state ; Routine to do zoom in/out and recentering of image. The /recenter ; option sets the new display center to the current cursor position. case zchange of 'in': state.zoom_level = (state.zoom_level + 1) < 6 'out': state.zoom_level = (state.zoom_level - 1) > (-6) 'one': state.zoom_level = 0 'none': ; no change to zoom level: recenter on current mouse position else: print, 'problem in atv_zoom!' endcase state.zoom_factor = 2.^state.zoom_level if (n_elements(recenter) GT 0) then begin state.centerpix = state.coord atv_getoffset endif atv_refresh if (n_elements(recenter) GT 0) then begin newpos = (state.coord - state.offset + 0.5) * state.zoom_factor atv_setwindow, state.draw_window_id tvcrs, newpos[0], newpos[1], /device atv_resetwindow atv_gettrack endif atv_resetwindow end ;----------------------------------------------------------------------- pro atv_autoscale ; Routine to auto-scale the image. common atv_state common atv_images widget_control, /hourglass if (n_elements(main_image) LT 5.e5) then begin med = median(main_image) sig = stddev(main_image) endif else begin ; resample big images before taking median, to save memory boxsize = 10 rx = state.image_size[0] mod boxsize ry = state.image_size[1] mod boxsize nx = state.image_size[0] - rx ny = state.image_size[1] - ry tmp_img = rebin(main_image[0: nx-1, 0: ny-1], $ nx/boxsize, ny/boxsize, /sample) med = median(tmp_img) sig = stddev(temporary(tmp_img)) endelse state.max_value = (med + (10 * sig)) < state.image_max state.min_value = (med - (2 * sig)) > state.image_min if (finite(state.min_value) EQ 0) then state.min_value = state.image_min if (finite(state.max_value) EQ 0) then state.max_value = state.image_max if (state.min_value GE state.max_value) then begin state.min_value = state.min_value - 1 state.max_value = state.max_value + 1 endif atv_set_minmax end ;-------------------------------------------------------------------- pro atv_restretch ; Routine to restretch the min and max to preserve the display ; visually but use the full color map linearly. Written by DF, and ; tweaked and debugged by AJB. It doesn't always work exactly the way ; you expect (especially in log-scaling mode), but mostly it works fine. common atv_state sx = state.brightness sy = state.contrast if state.scaling EQ 2 then return ; do nothing for hist-eq mode IF state.scaling EQ 0 THEN BEGIN sfac = (state.max_value-state.min_value) state.max_value = sfac*(sx+sy)+state.min_value state.min_value = sfac*(sx-sy)+state.min_value ENDIF IF state.scaling EQ 1 THEN BEGIN offset = state.min_value - $ (state.max_value - state.min_value) * 0.01 sfac = alog10((state.max_value - offset) / (state.min_value - offset)) state.max_value = 10.^(sfac*(sx+sy)+alog10(state.min_value - offset)) $ + offset state.min_value = 10.^(sfac*(sx-sy)+alog10(state.min_value - offset)) $ + offset ENDIF ; do this differently for 8 or 24 bit color, to prevent flashing if (state.bitdepth EQ 8) then begin atv_set_minmax atv_displayall state.brightness = 0.5 ; reset these state.contrast = 0.5 atv_stretchct, state.brightness, state.contrast endif else begin state.brightness = 0.5 ; reset these state.contrast = 0.5 atv_stretchct, state.brightness, state.contrast atv_set_minmax atv_displayall endelse end ;--------------------------------------------------------------------- function atv_wcsstring, lon, lat, ctype, equinox, disp_type, disp_equinox, $ disp_base60 ; Routine to return a string which displays cursor coordinates. ; Allows choice of various coordinate systems. ; Contributed by D. Finkbeiner, April 2000. ; 29 Sep 2000 - added degree (RA,dec) option DPF ; ctype - coord system in header ; disp_type - type of coords to display headtype = strmid(ctype[0], 0, 4) ; need numerical equinox values IF (equinox EQ 'J2000') THEN num_equinox = 2000.0 ELSE $ IF (equinox EQ 'B1950') THEN num_equinox = 1950.0 ELSE $ num_equinox = float(equinox) IF (disp_equinox EQ 'J2000') THEN num_disp_equinox = 2000.0 ELSE $ IF (disp_equinox EQ 'B1950') THEN num_disp_equinox = 1950.0 ELSE $ num_disp_equinox = float(equinox) ; first convert lon,lat to RA,dec (J2000) CASE headtype OF 'GLON': euler, lon, lat, ra, dec, 2 ; J2000 'ELON': BEGIN euler, lon, lat, ra, dec, 4 ; J2000 IF num_equinox NE 2000.0 THEN precess, ra, dec, num_equinox, 2000.0 END 'RA--': BEGIN ra = lon dec = lat IF num_equinox NE 2000.0 THEN precess, ra, dec, num_equinox, 2000.0 END 'DEC-': BEGIN ; for SDSS images ra = lon dec = lat IF num_equinox NE 2000.0 THEN precess, ra, dec, num_equinox, 2000.0 END ENDCASE ; Now convert RA,dec (J2000) to desired display coordinates: IF (disp_type[0] EQ 'RA--' or disp_type[0] EQ 'DEC-') THEN BEGIN ; generate (RA,dec) string disp_ra = ra disp_dec = dec IF num_disp_equinox NE 2000.0 THEN precess, disp_ra, disp_dec, $ 2000.0, num_disp_equinox IF disp_base60 THEN BEGIN ; (hh:mm:ss) format neg_dec = disp_dec LT 0 radec, disp_ra, abs(disp_dec), ihr, imin, xsec, ideg, imn, xsc wcsstring = string(ihr, imin, xsec, ideg, imn, xsc, disp_equinox, $ format = '(i2.2,":",i2.2,":",f6.3," ",i2.2,":",i2.2,":",f5.2," ",a6)' ) if (strmid(wcsstring, 6, 1) EQ ' ') then $ strput, wcsstring, '0', 6 if (strmid(wcsstring, 21, 1) EQ ' ') then $ strput, wcsstring, '0', 21 IF neg_dec THEN strput, wcsstring, '-', 14 ENDIF ELSE BEGIN ; decimal degree format wcsstring = string(disp_ra, disp_dec, disp_equinox, $ format='("Deg ",F9.5,",",F9.5,a6)') ENDELSE ENDIF IF disp_type[0] EQ 'GLON' THEN BEGIN ; generate (l,b) string euler, ra, dec, l, b, 1 wcsstring = string(l, b, format='("Galactic (",F9.5,",",F9.5,")")') ENDIF IF disp_type[0] EQ 'ELON' THEN BEGIN ; generate (l,b) string disp_ra = ra disp_dec = dec IF num_disp_equinox NE 2000.0 THEN precess, disp_ra, disp_dec, $ 2000.0, num_disp_equinox euler, disp_ra, disp_dec, lam, bet, 3 wcsstring = string(lam, bet, format='("Ecliptic (",F9.5,",",F9.5,")")') ENDIF return, wcsstring END ;---------------------------------------------------------------------- function atv_wavestring ; function to return string with wavelength info for spectral images common atv_state cd = (*state.astr_ptr).cd[0,0] crpix = (*state.astr_ptr).crpix[0] crval = (*state.astr_ptr).crval[0] cunit = sxpar(*state.head_ptr, 'cunit1') cunit = strcompress(string(cunit), /remove_all) if (cunit NE '0') then begin cunit = strcompress(strupcase(strmid(cunit,0,1)) + strmid(cunit,1), $ /remove_all) endif else begin cunit = '' endelse shifta = float(sxpar(*state.head_ptr, 'SHIFTA1')) wavelength = crval + ((state.coord[0] - crpix) * cd) + (shifta * cd) wstring = string(wavelength, format='(F8.2)') wavestring = strcompress('Wavelength: ' + wstring + ' ' + cunit) return, wavestring end ;-------------------------------------------------------------------- pro atv_gettrack ; Create the image to display in the track window that tracks ; cursor movements. Also update the coordinate display and the ; (x,y) and pixel value. common atv_state common atv_images ; Get x and y for center of track window zcenter = (0 > state.coord < state.image_size) track = bytarr(11,11) boxsize=5 xmin = 0 > (zcenter[0] - boxsize) xmax = (zcenter[0] + boxsize) < (state.image_size[0] - 1) ymin = 0 > (zcenter[1] - boxsize) ymax = (zcenter[1] + boxsize) < (state.image_size[1] - 1) startx = abs( (zcenter[0] - boxsize) < 0 ) starty = abs( (zcenter[1] - boxsize) < 0 ) track[startx,starty] = scaled_image[xmin:xmax,ymin:ymax] track_image = rebin(track, $ state.track_window_size, state.track_window_size, $ /sample) atv_setwindow, state.track_window_id tv, track_image ; Overplot an X on the central pixel in the track window, to show the ; current mouse position ; Changed central x to be green always plots, [0.46, 0.54], [0.46, 0.54], /normal, color = state.box_color, psym=0 plots, [0.46, 0.54], [0.54, 0.46], /normal, color = state.box_color, psym=0 ; update location bar with x, y, and pixel value loc_string = $ string(state.coord[0], $ state.coord[1], $ main_image[state.coord[0], $ state.coord[1]], $ format = '("(",i5,",",i5,") ",g12.5)') widget_control, state.location_bar_id, set_value = loc_string ; Update coordinate display if (state.wcstype EQ 'angle') then begin xy2ad, state.coord[0], state.coord[1], *(state.astr_ptr), lon, lat wcsstring = atv_wcsstring(lon, lat, (*state.astr_ptr).ctype, $ state.equinox, state.display_coord_sys, $ state.display_equinox, state.display_base60) widget_control, state.wcs_bar_id, set_value = wcsstring endif if (state.wcstype EQ 'lambda') then begin wavestring = atv_wavestring() widget_control, state.wcs_bar_id, set_value = wavestring endif atv_resetwindow end ;---------------------------------------------------------------------- pro atv_drawbox, norefresh=norefresh ; routine to draw the box on the pan window, given the current center ; of the display image. common atv_state common atv_images atv_setwindow, state.pan_window_id view_min = round(state.centerpix - $ (0.5 * state.draw_window_size / state.zoom_factor)) view_max = round(view_min + state.draw_window_size / state.zoom_factor) - 1 ; Create the vectors which contain the box coordinates box_x = float((([view_min[0], $ view_max[0], $ view_max[0], $ view_min[0], $ view_min[0]]) * state.pan_scale) + state.pan_offset[0]) box_y = float((([view_min[1], $ view_min[1], $ view_max[1], $ view_max[1], $ view_min[1]]) * state.pan_scale) + state.pan_offset[1]) ; set limits on box to make sure all sides always appear w = where(box_x LT 0, count) if (count GT 0) then box_x[w] = 0 w = where(box_y LT 0, count) if (count GT 0) then box_y[w] = 0 w = where(box_x GT state.pan_window_size-1, count) if (count GT 0) then box_x[w] = state.pan_window_size-1 w = where(box_y GT state.pan_window_size-1, count) if (count GT 0) then box_y[w] = state.pan_window_size-1 ; Redraw the pan image and overplot the box if (not(keyword_set(norefresh))) then $ device, copy=[0,0,state.pan_window_size, state.pan_window_size, 0, 0, $ state.pan_pixmap] plots, box_x, box_y, /device, color = state.box_color, psym=0 atv_resetwindow end ;---------------------------------------------------------------------- pro atv_pantrack, event ; routine to track the view box in the pan window during cursor motion common atv_state ; get the new box coords and draw the new box tmp_event = [event.x, event.y] newpos = state.pan_offset > tmp_event < $ (state.pan_offset + (state.image_size * state.pan_scale)) state.centerpix = round( (newpos - state.pan_offset ) / state.pan_scale) atv_drawbox atv_getoffset end ;---------------------------------------------------------------------- pro atv_resize ; Routine to resize the draw window when a top-level resize event ; occurs. common atv_state widget_control, state.base_id, tlb_get_size=tmp_event window = (state.base_min_size > tmp_event) newbase = window - state.base_pad newxsize = (tmp_event[0] - state.base_pad[0]) > $ (state.base_min_size[0] - state.base_pad[0]) newysize = (tmp_event[1] - state.base_pad[1]) > $ (state.base_min_size[1] - state.base_pad[1]) widget_control, state.draw_widget_id, $ scr_xsize = newxsize, scr_ysize = newysize widget_control, state.colorbar_widget_id, $ scr_xsize = newxsize, scr_ysize = state.colorbar_height state.draw_window_size = [newxsize, newysize] atv_colorbar widget_control, state.base_id, /clear_events widget_control, state.draw_base_id, /sensitive, /input_focus end ;---------------------------------------------------------------------- pro atv_scaleimage ; Create a byte-scaled copy of the image, scaled according to ; the state.scaling parameter. common atv_state common atv_images ; Since this can take some time for a big image, set the cursor ; to an hourglass until control returns to the event loop. widget_control, /hourglass delvarx, scaled_image case state.scaling of 0: scaled_image = $ ; linear stretch bytscl(main_image, $ /nan, $ min=state.min_value, $ max=state.max_value, $ top = state.ncolors - 1) + 8 1: begin ; log stretch offset = state.min_value - $ (state.max_value - state.min_value) * 0.01 scaled_image = $ bytscl( alog10(main_image - offset), $ min=alog10(state.min_value - offset), /nan, $ max=alog10(state.max_value - offset), $ top=state.ncolors - 1) + 8 end 2: scaled_image = $ ; histogram equalization bytscl(hist_equal(main_image, $ minv = state.min_value, $ maxv = state.max_value), $ /nan, top = state.ncolors - 1) + 8 endcase end ;---------------------------------------------------------------------- pro atv_getstats, align=align ; Get basic image stats: min and max, and size. ; set align keyword to preserve alignment of previous image common atv_state common atv_images ; this routine operates on main_image, which is in the ; atv_images common block widget_control, /hourglass state.image_size = [ (size(main_image))[1], (size(main_image))[2] ] state.image_min = min(main_image, max=maxx, /nan) state.image_max = maxx if (state.min_value GE state.max_value) then begin state.min_value = state.min_value - 1 state.max_value = state.max_value + 1 endif ; zero the current display position on the center of the image, ; unless user selected /align keyword state.coord = round(state.image_size / 2.) IF NOT keyword_set(align) THEN state.centerpix = round(state.image_size / 2.) atv_getoffset ; Clear all plot annotations atverase, /norefresh end ;------------------------------------------------------------------- pro atv_setwindow, windowid ; replacement for wset. Reads the current active window first. ; This should be used when the currently active window is an external ; (i.e. non-atv) idl window. Use atv_setwindow to set the window to ; one of the atv window, then display something to that window, then ; use atv_resetwindow to set the current window back to the currently ; active external window. Make sure that device is not set to ; postscript, because if it is we can't display anything. common atv_state if (!d.name NE 'PS') then begin state.active_window_id = !d.window wset, windowid endif end ;--------------------------------------------------------------------- pro atv_resetwindow ; reset to current active window common atv_state ; The empty command used below is put there to make sure that all ; graphics to the previous atv window actually get displayed to screen ; before we wset to a different window. Without it, some line ; graphics would not actually appear on screen. if (!d.name NE 'PS') then begin empty wset, state.active_window_id endif end ;------------------------------------------------------------------ pro atv_getwindow ; get currently active window id common atv_state if (!d.name NE 'PS') then begin state.active_window_id = !d.window endif end ;-------------------------------------------------------------------- ; Fits file reading routines ;-------------------------------------------------------------------- pro atv_readfits, fitsfilename=fitsfilename, newimage=newimage ; Read in a new image when user goes to the File->ReadFits menu. ; Do a reasonable amount of error-checking first, to prevent unwanted ; crashes. common atv_state common atv_images newimage = 0 cancelled = 0 if (n_elements(fitsfilename) EQ 0) then window = 1 else window = 0 ; Added list of filters for SDSS suffixes, etc. filterlist = ['*.fits;*.fit;*.fit.gz;*.fits.gz'] ; If fitsfilename hasn't been passed to this routine, get filename ; from dialog_pickfile. if (n_elements(fitsfilename) EQ 0) then begin fitsfile = $ dialog_pickfile(filter = filterlist, $ group = state.base_id, $ /must_exist, $ /read, $ path = state.current_dir, $ get_path = tmp_dir, $ title = 'Select Fits Image') if (tmp_dir NE '') then state.current_dir = tmp_dir if (fitsfile EQ '') then return ; 'cancel' button returns empty string endif else begin fitsfile = fitsfilename endelse ; Get fits header so we know what kind of image this is. head = headfits(fitsfile) ; Check validity of fits file header if (n_elements(strcompress(head, /remove_all)) LT 2) then begin atv_message, 'File does not appear to be a valid fits image!', $ window = window, msgtype = 'error' return endif if (!ERR EQ -1) then begin atv_message, $ 'Selected file does not appear to be a valid FITS image!', $ msgtype = 'error', window = window return endif ; Two system variable definitions are needed in order to run fits_info defsysv,'!TEXTOUT',1 defsysv,'!TEXTUNIT',0 ; Find out if this is a fits extension file, and how many extensions fits_info, fitsfile, n_ext = numext, /silent instrume = strcompress(string(sxpar(head, 'INSTRUME')), /remove_all) origin = strcompress(sxpar(head, 'ORIGIN'), /remove_all) naxis = sxpar(head, 'NAXIS') ; Make sure it's not a 1-d spectrum if (numext EQ 0 AND naxis LT 2) then begin atv_message, 'Selected file is not a 2-d FITS image!', $ window = window, msgtype = 'error' return endif state.title_extras = '' ; Now call the subroutine that knows how to read in this particular ; data format: if ((numext GT 0) AND (instrume NE 'WFPC2')) then begin atv_fitsext_read, fitsfile, numext, head, cancelled endif else if ((instrume EQ 'WFPC2') AND (naxis EQ 3)) then begin atv_wfpc2_read, fitsfile, head, cancelled endif else if ((naxis EQ 3) AND (origin EQ '2MASS')) then begin atv_2mass_read, fitsfile, head, cancelled endif else begin atv_plainfits_read, fitsfile, head, cancelled endelse if (cancelled EQ 1) then return ; Make sure it's a 2-d image if ( (size(main_image))[0] NE 2 ) then begin atv_message, 'Selected file is not a 2-D fits image!', $ msgtype = 'error', window = window main_image = fltarr(512, 512) newimage = 1 return endif widget_control, /hourglass state.imagename = fitsfile atv_setheader, head newimage = 1 end ;---------------------------------------------------------- ; Subroutines for reading specific data formats ;--------------------------------------------------------------- pro atv_fitsext_read, fitsfile, numext, head, cancelled ; Fits reader for fits extension files common atv_state common atv_images numlist = '' for i = 1, numext do begin numlist = strcompress(numlist + string(i) + '|', /remove_all) endfor numlist = strmid(numlist, 0, strlen(numlist)-1) droptext = strcompress('0, droplist, ' + numlist + $ ', label_left=Select Extension:, set_value=0') formdesc = ['0, button, Read Primary Image, quit', $ '0, label, OR:', $ droptext, $ '0, button, Read Fits Extension, quit', $ '0, button, Cancel, quit'] textform = cw_form(formdesc, /column, $ title = 'Fits Extension Selector') if (textform.tag4 EQ 1) then begin ; cancelled cancelled = 1 return endif if (textform.tag3 EQ 1) then begin ;extension selected extension = long(textform.tag2) + 1 endif else begin extension = 0 ; primary image selected endelse ; Make sure it's not a fits table: this would make mrdfits crash head = headfits(fitsfile, exten=extension) xten = strcompress(sxpar(head, 'XTENSION'), /remove_all) if (xten EQ 'BINTABLE') then begin atv_message, 'File appears to be a FITS table, not an image.', $ msgtype='error', /window cancelled = 1 return endif if (extension GE 1) then begin state.title_extras = strcompress('Extension ' + string(extension)) endif else begin state.title_extras = 'Primary Image' endelse ; Read in the image delvarx, main_image ; use fits_read so that extension headers will inherit primary header ; keywords. Needed for HST ACS images. fits_read, fitsfile, main_image, head, exten_no = extension end ;---------------------------------------------------------------- pro atv_plainfits_read, fitsfile, head, cancelled common atv_images ; Fits reader for plain fits files, no extensions. delvarx, main_image main_image = mrdfits(fitsfile, 0, head, /silent, /fscale) end ;------------------------------------------------------------------ pro atv_wfpc2_read, fitsfile, head, cancelled ; Fits reader for 4-panel HST WFPC2 images common atv_state common atv_images droptext = strcompress('0, droplist,PC|WF2|WF3|WF4|Mosaic,' + $ 'label_left = Select WFPC2 CCD:, set_value=0') formdesc = [droptext, $ '0, button, Read WFPC2 Image, quit', $ '0, button, Cancel, quit'] textform = cw_form(formdesc, /column, title = 'WFPC2 Chip Selector') if (textform.tag2 EQ 1) then begin ; cancelled cancelled = 1 return endif ccd = long(textform.tag0) + 1 widget_control, /hourglass if (ccd LE 4) then begin delvarx, main_image wfpc2_read, fitsfile, main_image, head, num_chip = ccd endif if (ccd EQ 5) then begin delvarx, main_image wfpc2_read, fitsfile, main_image, head, /batwing endif case ccd of 1: state.title_extras = 'PC1' 2: state.title_extras = 'WF2' 3: state.title_extras = 'WF3' 4: state.title_extras = 'WF4' 5: state.title_extras = 'Mosaic' else: state.title_extras = '' endcase end ;---------------------------------------------------------------------- pro atv_2mass_read, fitsfile, head, cancelled ; Fits reader for 3-plane 2MASS Extended Source J/H/Ks data cube common atv_state common atv_images droptext = strcompress('0, droplist,J|H|Ks,' + $ 'label_left = Select 2MASS Band:, set_value=0') formdesc = [droptext, $ '0, button, Read 2MASS Image, quit', $ '0, button, Cancel, quit'] textform = cw_form(formdesc, /column, title = '2MASS Band Selector') if (textform.tag2 EQ 1) then begin ; cancelled cancelled = 1 return endif delvarx, main_image main_image = mrdfits(fitsfile, 0, head, /silent, /fscale) band = long(textform.tag0) main_image = main_image[*,*,band] ; fixed 11/28/2000 case textform.tag0 of 0: state.title_extras = 'J Band' 1: state.title_extras = 'H Band' 2: state.title_extras = 'Ks Band' else: state.title_extras = '' endcase ; fix ctype2 in header to prevent crashes when running xy2ad routine: if (strcompress(sxpar(head, 'CTYPE2'), /remove_all) EQ 'DEC---SIN') then $ sxaddpar, head, 'CTYPE2', 'DEC--SIN' end ;----------------------------------------------------------------------- ; Routines for creating output graphics ;---------------------------------------------------------------------- pro atv_writetiff ; writes a tiff image of the current display common atv_state common atv_images ; Get filename to save image filename = dialog_pickfile(filter = '*.tiff', $ file = 'atv.tiff', $ group = state.base_id, $ path = state.current_dir, $ get_path = tmp_dir, $ /write) if (tmp_dir NE '') then state.current_dir = tmp_dir tmp_result = findfile(filename, count = nfiles) result = '' if (strcompress(filename, /remove_all) EQ '') then return ; cancel if (filename EQ state.current_dir) then begin atv_message, 'Must indicate filename to save.', msgtype = 'error', /window return endif if (filename EQ '') then return if (nfiles GT 0) then begin mesg = strarr(2) mesg[0] = 'Overwrite existing file:' tmp_string = $ strmid(filename, strpos(filename, state.delimiter, /reverse_search) + 1) mesg[1] = strcompress(tmp_string + '?', /remove_all) result = dialog_message(mesg, $ /default_no, $ dialog_parent = state.base_id, $ /question) endif if (strupcase(result) EQ 'NO') then return atv_setwindow, state.draw_window_id if (state.bitdepth EQ 8) then begin ; In 8-bit mode, the screen color table will have fewer than 256 ; colors. Stretch out the existing color table to a full 256 colors ; when writing the tiff image. tvlct, rr, gg, bb, /get rn = congrid(rr[8:!d.table_size-2], 248) gn = congrid(gg[8:!d.table_size-2], 248) bn = congrid(bb[8:!d.table_size-2], 248) rvec = bytarr(256) gvec = bytarr(256) bvec = bytarr(256) rvec[0] = rr ; load in the first 8 colors gvec[0] = gg bvec[0] = bb rvec[8] = temporary(rn) gvec[8] = temporary(gn) bvec[8] = temporary(bn) img = tvrd() w = where(img GT 7, count) if (count GT 0) then begin tmp_img = img[w] tmp_img = bytscl((img[w]), top = 247, min=8, max=(!d.table_size-1)) + 8 img[w] = tmp_img endif img = reverse(img, 2) write_tiff, filename, img, 1, $ red = temporary(rvec), $ green = temporary(gvec), $ blue = temporary(bvec) endif else begin ; 24-bit is much easier! tmp_img = tvrd(/true) tmp_img = reverse(tmp_img, 3) write_tiff, filename, tmp_img, 1, /planarconfig endelse atv_resetwindow end ;---------------------------------------------------------------------- pro atv_writeps ; Writes an encapsulated postscript file of the current display. ; Calls cmps_form to get postscript file parameters. common atv_state common atv_images common atv_color widget_control, /hourglass view_min = round(state.centerpix - $ (0.5 * state.draw_window_size / state.zoom_factor)) ; bug fix from N. Cunningham here- modified 4/14/06 to fix centering ; of overplots on the image by subtracting 1 from the max size view_max = round(view_min + state.draw_window_size $ / state.zoom_factor - 1) xsize = (state.draw_window_size[0] / state.zoom_factor) > $ (view_max[0] - view_min[0] + 1) ysize = (state.draw_window_size[1] / state.zoom_factor) > $ (view_max[1] - view_min[1] + 1) aspect = float(ysize) / float(xsize) fname = strcompress(state.current_dir + 'atv.ps', /remove_all) tvlct, rr, gg, bb, 8, /get tmpwindow = state.active_window_id forminfo = cmps_form(cancel = canceled, create = create, $ aspect = aspect, parent = state.base_id, $ /preserve_aspect, $ xsize = 6.0, ysize = 6.0 * aspect, $ /color, /encapsulated, $ /nocommon, papersize='Letter', $ bits_per_pixel=8, $ filename = fname, $ button_names = ['Create PS File']) atv_setwindow, tmpwindow if (canceled) then return if (forminfo.filename EQ '') then return tvlct, rr, gg, bb, 8 tmp_result = findfile(forminfo.filename, count = nfiles) result = '' if (nfiles GT 0) then begin mesg = strarr(2) mesg[0] = 'Overwrite existing file:' tmp_string = $ strmid(forminfo.filename, $ strpos(forminfo.filename, state.delimiter, /reverse_search) + 1) mesg[1] = strcompress(tmp_string + '?', /remove_all) result = dialog_message(mesg, $ /default_no, $ dialog_parent = state.base_id, $ /question) endif if (strupcase(result) EQ 'NO') then return widget_control, /hourglass screen_device = !d.name ; In 8-bit mode, the screen color table will have fewer than 256 ; colors. Stretch out the existing color table to 256 colors for the ; postscript plot. set_plot, 'ps' device, _extra = forminfo tvlct, rr, gg, bb, 8, /get rn = congrid(rr, 248) gn = congrid(gg, 248) bn = congrid(bb, 248) tvlct, temporary(rn), temporary(gn), temporary(bn), 8 ; Make a full-resolution version of the display image, accounting for ; scalable pixels in the postscript output newdisplay = bytarr(xsize, ysize) startpos = abs(round(state.offset) < 0) view_min = (0 > view_min < (state.image_size - 1)) view_max = (0 > view_max < (state.image_size - 1)) dimage = bytscl(scaled_image[view_min[0]:view_max[0], $ view_min[1]:view_max[1]], $ top = 247, min=8, max=(!d.table_size-1)) + 8 newdisplay[startpos[0], startpos[1]] = temporary(dimage) ; if there's blank space around the image border, keep it black tv, newdisplay atv_plotall if (state.frame EQ 1) then begin ; put frame around image plot, [0], [0], /nodata, position=[0,0,1,1], $ xrange=[0,1], yrange=[0,1], xstyle=5, ystyle=5, /noerase boxx = [0,0,1,1,0,0] boxy = [0,1,1,0,0,1] oplot, boxx, boxy, color=0, thick=state.framethick endif tvlct, temporary(rr), temporary(gg), temporary(bb), 8 device, /close set_plot, screen_device end ;---------------------------------------------------------------------- ; routines for defining the color maps ;---------------------------------------------------------------------- pro atv_stretchct, brightness, contrast, getcursor = getcursor ; routine to change color stretch for given values of ; brightness and contrast. ; Complete rewrite 2000-Sep-21 - Doug Finkbeiner ; This routine is now shorter and easier to understand. common atv_state common atv_color ; if GETCURSOR then assume mouse position passed; otherwise ignore ; inputs if (keyword_set(getcursor)) then begin state.brightness = brightness/float(state.draw_window_size[0]) state.contrast = contrast/float(state.draw_window_size[1]) endif x = state.brightness*(state.ncolors-1) y = state.contrast*(state.ncolors-1) > 2 ; Minor change by AJB high = x+y & low = x-y diff = (high-low) > 1 slope = float(state.ncolors-1)/diff ;Scale to range of 0 : nc-1 intercept = -slope*low p = long(findgen(state.ncolors)*slope+intercept) ;subscripts to select tvlct, r_vector[p], g_vector[p], b_vector[p], 8 end ;------------------------------------------------------------------ pro atv_initcolors ; Load a simple color table with the basic 8 colors in the lowest ; 8 entries of the color table. Also set top color to white. common atv_state rtiny = [0, 1, 0, 0, 0, 1, 1, 1] gtiny = [0, 0, 1, 0, 1, 0, 1, 1] btiny = [0, 0, 0, 1, 1, 1, 0, 1] tvlct, 255*rtiny, 255*gtiny, 255*btiny tvlct, [255],[255],[255], !d.table_size-1 end ;-------------------------------------------------------------------- pro atv_getct, tablenum ; Read in a pre-defined color table, and invert if necessary. common atv_color common atv_state common atv_images loadct, tablenum, /silent, bottom=8 tvlct, r, g, b, 8, /get atv_initcolors r = r[0:state.ncolors-2] g = g[0:state.ncolors-2] b = b[0:state.ncolors-2] if (state.invert_colormap EQ 1) then begin r = reverse(r) g = reverse(g) b = reverse(b) endif r_vector = r g_vector = g b_vector = b atv_stretchct, state.brightness, state.contrast if (state.bitdepth EQ 24 AND (n_elements(pan_image) GT 10) ) then $ atv_refresh end ;-------------------------------------------------------------------- function atv_polycolor, p ; Routine to return an vector of length !d.table_size-8, ; defined by a 5th order polynomial. Called by atv_makect ; to define new color tables in terms of polynomial coefficients. common atv_state x = findgen(256) y = p[0] + x * p[1] + x^2 * p[2] + x^3 * p[3] + x^4 * p[4] + x^5 * p[5] w = where(y GT 255, nw) if (nw GT 0) then y(w) = 255 w = where(y LT 0, nw) if (nw GT 0) then y(w) = 0 z = congrid(y, state.ncolors) return, z end ;---------------------------------------------------------------------- pro atv_makect, tablename ; Define new color tables here. Invert if necessary. common atv_state common atv_color case tablename of 'ATV Special': begin r = atv_polycolor([39.4609, $ -5.19434, $ 0.128174, $ -0.000857115, $ 2.23517e-06, $ -1.87902e-09]) g = atv_polycolor([-15.3496, $ 1.76843, $ -0.0418186, $ 0.000308216, $ -6.07106e-07, $ 0.0000]) b = atv_polycolor([0.000, $ 12.2449, $ -0.202679, $ 0.00108027, $ -2.47709e-06, $ 2.66846e-09]) end ; add more color table definitions here as needed... else: return endcase if (state.invert_colormap EQ 1) then begin r = reverse(r) g = reverse(g) b = reverse(b) endif r_vector = temporary(r) g_vector = temporary(g) b_vector = temporary(b) atv_stretchct, state.brightness, state.contrast if (state.bitdepth EQ 24) then atv_refresh end ;---------------------------------------------------------------------- function atv_icolor, color ; Routine to reserve the bottom 8 colors of the color table ; for plot overlays and line plots. if (n_elements(color) EQ 0) then return, 1 ncolor = N_elements(color) ; If COLOR is a string or array of strings, then convert color names ; to integer values if (size(color,/tname) EQ 'STRING') then begin ; Test if COLOR is a string ; Detemine the default color for the current device if (!d.name EQ 'X') then defcolor = 7 $ ; white for X-windows else defcolor = 0 ; black otherwise icolor = 0 * (color EQ 'black') $ + 1 * (color EQ 'red') $ + 2 * (color EQ 'green') $ + 3 * (color EQ 'blue') $ + 4 * (color EQ 'cyan') $ + 5 * (color EQ 'magenta') $ + 6 * (color EQ 'yellow') $ + 7 * (color EQ 'white') $ + defcolor * (color EQ 'default') endif else begin icolor = long(color) endelse return, icolor end ;--------------------------------------------------------------------- ; routines dealing with image header, title, and related info ;-------------------------------------------------------------------- pro atv_settitle ; Update title bar with the image file name common atv_state if (state.imagename EQ '') then begin widget_control, state.base_id, tlb_set_title = 'atv' endif else begin slash = strpos(state.imagename, state.delimiter, /reverse_search) if (slash NE -1) then name = strmid(state.imagename, slash+1) $ else name = state.imagename title = strcompress('atv: '+ name + ' ' + state.title_extras) widget_control, state.base_id, tlb_set_title = title endelse end ;---------------------------------------------------------------------- pro atv_setheader, head ; Routine to keep the image header using a pointer to a ; heap variable. If there is no header (i.e. if atv has just been ; passed a data array rather than a filename), then make the ; header pointer a null pointer. Get astrometry info from the ; header if available. If there's no astrometry information, set ; state.astr_ptr to be a null pointer. common atv_state ; Kill the header info window when a new image is read in if (xregistered('atv_headinfo')) then begin widget_control, state.headinfo_base_id, /destroy endif if (xregistered('atv_stats')) then begin widget_control, state.stats_base_id, /destroy endif if (n_elements(head) LE 1) then begin ; If there's no image header... state.wcstype = 'none' ptr_free, state.head_ptr state.head_ptr = ptr_new() ptr_free, state.astr_ptr state.astr_ptr = ptr_new() widget_control, state.wcs_bar_id, set_value = '---No WCS Info---' return endif ptr_free, state.head_ptr state.head_ptr = ptr_new(head) ; Get astrometry information from header, if it exists ptr_free, state.astr_ptr ; kill previous astrometry info state.astr_ptr = ptr_new() extast, head, astr, noparams ; No valid astrometry in header if (noparams EQ -1) then begin widget_control, state.wcs_bar_id, set_value = '---No WCS Info---' state.wcstype = 'none' return endif ; coordinate types that we can't use: if ( (strcompress(string(astr.ctype[0]), /remove_all) EQ 'PIXEL') $ or (strcompress(string(astr.ctype[0]), /remove_all) EQ '') ) then begin widget_control, state.wcs_bar_id, set_value = '---No WCS Info---' state.wcstype = 'none' return endif ; Image is a 2-d calibrated spectrum: ; (these keywords work for HST STIS 2-d spectral images) if (astr.ctype[0] EQ 'LAMBDA' OR astr.ctype[0] EQ 'WAVE') then begin state.wcstype = 'lambda' state.astr_ptr = ptr_new(astr) widget_control, state.wcs_bar_id, set_value = ' ' return endif ; Good astrometry info in header: state.wcstype = 'angle' widget_control, state.wcs_bar_id, set_value = ' ' ; Check for GSS type header if strmid( astr.ctype[0], 5, 3) EQ 'GSS' then begin hdr1 = head gsss_STDAST, hdr1 extast, hdr1, astr, noparams endif ; Create a pointer to the header info state.astr_ptr = ptr_new(astr) ; Get the equinox of the coordinate system equ = get_equinox(head, code) if (code NE -1) then begin if (equ EQ 2000.0) then state.equinox = 'J2000' if (equ EQ 1950.0) then state.equinox = 'B1950' if (equ NE 2000.0 and equ NE 1950.0) then $ state.equinox = string(equ, format = '(f6.1)') endif else begin IF (strmid(astr.ctype[0], 0, 4) EQ 'GLON') THEN BEGIN state.equinox = 'J2000' ; (just so it is set) ENDIF ELSE BEGIN ; If no valid equinox, then ignore the WCS info. print, 'Warning: WCS equinox not given in image header. Ignoring WCS info.' ptr_free, state.astr_ptr ; clear pointer state.astr_ptr = ptr_new() state.equinox = 'J2000' state.wcstype = 'none' widget_control, state.wcs_bar_id, set_value = '---No WCS Info---' ENDELSE endelse ; Set default display to native system in header state.display_equinox = state.equinox state.display_coord_sys = strmid(astr.ctype[0], 0, 4) end ;--------------------------------------------------------------------- pro atv_headinfo common atv_state ; If there's no header, kill the headinfo window and exit this ; routine. if (not(ptr_valid(state.head_ptr))) then begin if (xregistered('atv_headinfo')) then begin widget_control, state.headinfo_base_id, /destroy endif atv_message, 'No header information available for this image!', $ msgtype = 'error', /window return endif ; If there is header information but not headinfo window, ; create the headinfo window. if (not(xregistered('atv_headinfo', /noshow))) then begin headinfo_base = $ widget_base(/base_align_right, $ group_leader = state.base_id, $ /column, $ title = 'atv image header information', $ uvalue = 'headinfo_base') state.headinfo_base_id = headinfo_base h = *(state.head_ptr) headinfo_text = widget_text(headinfo_base, $ /scroll, $ value = h, $ xsize = 85, $ ysize = 24) headinfo_done = widget_button(headinfo_base, $ value = 'Done', $ uvalue = 'headinfo_done') widget_control, headinfo_base, /realize xmanager, 'atv_headinfo', headinfo_base, /no_block endif end ;--------------------------------------------------------------------- pro atv_headinfo_event, event common atv_state widget_control, event.id, get_uvalue = uvalue case uvalue of 'headinfo_done': widget_control, event.top, /destroy else: endcase end ;---------------------------------------------------------------------- ; routines to do plot overlays ;---------------------------------------------------------------------- pro atv_plot1plot, iplot common atv_pdata common atv_state ; Plot a point or line overplot on the image atv_setwindow, state.draw_window_id widget_control, /hourglass oplot, [(*(plot_ptr[iplot])).x], [(*(plot_ptr[iplot])).y], $ _extra = (*(plot_ptr[iplot])).options atv_resetwindow state.newrefresh=1 end ;---------------------------------------------------------------------- pro atv_plot1text, iplot common atv_pdata common atv_state ; Plot a text overlay on the image atv_setwindow, state.draw_window_id widget_control, /hourglass xyouts, (*(plot_ptr[iplot])).x, (*(plot_ptr[iplot])).y, $ (*(plot_ptr[iplot])).text, _extra = (*(plot_ptr[iplot])).options atv_resetwindow state.newrefresh=1 end ;---------------------------------------------------------------------- pro atv_plot1contour, iplot common atv_pdata common atv_state ; Overplot contours on the image atv_setwindow, state.draw_window_id widget_control, /hourglass xrange = !x.crange yrange = !y.crange ; The following allows for 2 conditions, depending upon whether X and Y ; are set dims = size( (*(plot_ptr[iplot])).z,/dim ) if (size( (*(plot_ptr[iplot])).x,/N_elements ) EQ dims[0] $ AND size( (*(plot_ptr[iplot])).y,/N_elements) EQ dims[1] ) then begin contour, (*(plot_ptr[iplot])).z, (*(plot_ptr[iplot])).x, $ (*(plot_ptr[iplot])).y, $ position=[0,0,1,1], xrange=xrange, yrange=yrange, $ xstyle=5, ystyle=5, /noerase, $ _extra = (*(plot_ptr[iplot])).options endif else begin contour, (*(plot_ptr[iplot])).z, $ position=[0,0,1,1], xrange=xrange, yrange=yrange, $ xstyle=5, ystyle=5, /noerase, $ _extra = (*(plot_ptr[iplot])).options endelse atv_resetwindow state.newrefresh=1 end ;--------------------------------------------------------------------- pro atv_plot1compass, iplot ; Uses idlastro routine arrows to plot compass arrows. common atv_pdata common atv_state atv_setwindow, state.draw_window_id widget_control, /hourglass arrows, *(state.head_ptr), $ (*(plot_ptr[iplot])).x, $ (*(plot_ptr[iplot])).y, $ thick = (*(plot_ptr[iplot])).thick, $ charsize = (*(plot_ptr[iplot])).charsize, $ arrowlen = (*(plot_ptr[iplot])).arrowlen, $ color = (*(plot_ptr[iplot])).color, $ notvertex = (*(plot_ptr[iplot])).notvertex, $ /data atv_resetwindow state.newrefresh=1 end ;--------------------------------------------------------------------- pro atv_plot1scalebar, iplot ; uses modified version of idlastro routine arcbar to plot a scalebar common atv_pdata common atv_state atv_setwindow, state.draw_window_id widget_control, /hourglass ; routine arcbar doesn't recognize color=0, because it uses ; keyword_set to check the color. So we need to set !p.color = 0 ; to get black if the user wants color=0 !p.color = 0 atv_arcbar, *(state.head_ptr), $ (*(plot_ptr[iplot])).arclen, $ position = (*(plot_ptr[iplot])).position, $ thick = (*(plot_ptr[iplot])).thick, $ size = (*(plot_ptr[iplot])).size, $ color = (*(plot_ptr[iplot])).color, $ seconds = (*(plot_ptr[iplot])).seconds, $ /data atv_resetwindow state.newrefresh=1 end ;---------------------------------------------------------------------- pro atv_arcbar, hdr, arclen, LABEL = label, SIZE = size, THICK = thick, $ DATA =data, COLOR = color, POSITION = position, $ NORMAL = normal, SECONDS=SECONDS common atv_state ; This is a copy of the IDL Astronomy User's Library routine 'arcbar', ; abbreviated for atv and modified to work with zoomed images. For ; the revision history of the original arcbar routine, look at ; arcbar.pro in the pro/astro subdirectory of the IDL Astronomy User's ; Library. ; Modifications for atv: ; Modified to work with zoomed ATV images, AJB Jan. 2000 ; Moved text label upwards a bit for better results, AJB Jan. 2000 On_error,2 ;Return to caller extast, hdr, bastr, noparams ;extract astrom params in deg. if N_params() LT 2 then arclen = 1 ;default size = 1 arcmin if not keyword_set( SIZE ) then size = 1.0 if not keyword_set( THICK ) then thick = !P.THICK if not keyword_set( COLOR ) then color = !P.COLOR a = bastr.crval[0] d = bastr.crval[1] if keyword_set(seconds) then factor = 3600.0d else factor = 60.0 d1 = d + (1/factor) ;compute x,y of crval + 1 arcmin proj = strmid(bastr.ctype[0],5,3) case proj of 'GSS': gsssadxy, bastr, [a,a], [d,d1], x, y else: ad2xy, [a,a], [d,d1], bastr, x, y endcase dmin = sqrt( (x[1]-x[0])^2 + (y[1]-y[0])^2 ) ;det. size in pixels of 1 arcmin if (!D.FLAGS AND 1) EQ 1 then begin ;Device have scalable pixels? if !X.s[1] NE 0 then begin dmin = convert_coord( dmin, 0, /DATA, /TO_DEVICE) - $ convert_coord( 0, 0, /DATA, /TO_DEVICE) ;Fixed Apr 97 dmin = dmin[0] endif else dmin = dmin/sxpar(hdr, 'NAXIS1' ) ;Fixed Oct. 96 endif else dmin = dmin * state.zoom_factor ; added by AJB Jan. '00 dmini2 = round(dmin * arclen) if keyword_set(NORMAL) then begin posn = convert_coord(position,/NORMAL, /TO_DEVICE) xi = posn[0] & yi = posn[1] endif else if keyword_set(DATA) then begin posn = convert_coord(position,/DATA, /TO_DEVICE) xi = posn[0] & yi = posn[1] endif else begin xi = position[0] & yi = position[1] endelse xf = xi + dmini2 dmini3 = dmini2/10 ;Height of vertical end bars = total length/10. plots,[xi,xf],[yi,yi], COLOR=color, /DEV, THICK=thick plots,[xf,xf],[ yi+dmini3, yi-dmini3 ], COLOR=color, /DEV, THICK=thick plots,[xi,xi],[ yi+dmini3, yi-dmini3 ], COLOR=color, /DEV, THICK=thick if not keyword_set(Seconds) then begin if (!D.NAME EQ 'PS') and (!P.FONT EQ 0) then $ ;Postscript Font? arcsym='!9'+string(162B)+'!X' else arcsym = "'" endif else begin if (!D.NAME EQ 'PS') and (!P.FONT EQ 0) then $ ;Postscript Font? arcsym = '!9'+string(178B)+'!X' else arcsym = "''" endelse if not keyword_set( LABEL) then begin if (arclen LT 1) then arcstr = string(arclen,format='(f4.2)') $ else arcstr = string(arclen) label = strtrim(arcstr,2) + arcsym endif ; AJB modified this to move the numerical label upward a bit: 5/8/2000 xyouts,(xi+xf)/2, (yi+(dmini2/10)), label, SIZE = size,COLOR=color,$ /DEV, alignment=.5, CHARTHICK=thick return end ;---------------------------------------------------------------------- pro atv_plotwindow common atv_state atv_setwindow, state.draw_window_id ; Set plot window ; improved version by N. Cunningham- different scaling for postscript ; vs non-postscript output -- added 4/14/06 if !d.name eq 'PS' then begin xrange=[state.offset[0], $ state.offset[0] + state.draw_window_size[0] $ / state.zoom_factor] - 0.5 yrange=[state.offset[1], $ state.offset[1] + state.draw_window_size[1] $ / state.zoom_factor] - 0.5 endif else begin xrange=[state.offset[0] + 0.5 / state.zoom_factor, $ state.offset[0] + (state.draw_window_size[0] + 0.5) $ / state.zoom_factor] - 0.5 yrange=[state.offset[1] + 0.5 / state.zoom_factor, $ state.offset[1] + (state.draw_window_size[1] + 0.5) $ / state.zoom_factor] - 0.5 endelse plot, [0], [0], /nodata, position=[0,0,1,1], $ xrange=xrange, yrange=yrange, xstyle=5, ystyle=5, /noerase atv_resetwindow end ;---------------------------------------------------------------------- pro atv_plotall common atv_state common atv_pdata ; Routine to overplot all line, text, and contour plots if (nplot EQ 0) then return atv_plotwindow for iplot = 1, nplot do begin case (*(plot_ptr[iplot])).type of 'points' : atv_plot1plot, iplot 'text' : atv_plot1text, iplot 'contour' : atv_plot1contour, iplot 'compass' : atv_plot1compass, iplot 'scalebar': atv_plot1scalebar, iplot else : print, 'Problem in atv_plotall!' endcase endfor end ;---------------------------------------------------------------------- pro atvplot, x, y, _extra = options common atv_pdata common atv_state ; Routine to read in line plot data and options, store in a heap ; variable structure, and plot the line plot if (not(xregistered('atv', /noshow))) then begin print, 'You need to start ATV first!' return endif if (N_params() LT 1) then begin print, 'Too few parameters for ATVPLOT.' return endif if (n_elements(options) EQ 0) then options = {color: 'red'} if (nplot LT maxplot) then begin nplot = nplot + 1 ; convert color names to index numbers, and set default=red c = where(tag_names(options) EQ 'COLOR', count) if (count EQ 0) then options = create_struct(options, 'color', 'red') options.color = atv_icolor(options.color) pstruct = {type: 'points', $ ; points x: x, $ ; x coordinate y: y, $ ; y coordinate options: options $ ; plot keyword options } plot_ptr[nplot] = ptr_new(pstruct) atv_plotwindow atv_plot1plot, nplot endif else begin print, 'Too many calls to ATVPLOT.' endelse end ;---------------------------------------------------------------------- pro atvxyouts, x, y, text, _extra = options common atv_pdata common atv_state ; Routine to read in text overplot string and options, store in a heap ; variable structure, and overplot the text if (not(xregistered('atv', /noshow))) then begin print, 'You need to start ATV first!' return endif if (N_params() LT 3) then begin print, 'Too few parameters for ATVXYOUTS' return endif if (n_elements(options) EQ 0) then options = {color: 'red'} if (nplot LT maxplot) then begin nplot = nplot + 1 ; convert color names to index numbers, and set default=red c = where(tag_names(options) EQ 'COLOR', count) if (count EQ 0) then options = create_struct(options, 'color', 'red') options.color = atv_icolor(options.color) ; set default font to 1 c = where(tag_names(options) EQ 'FONT', count) if (count EQ 0) then options = create_struct(options, 'font', 1) pstruct = {type: 'text', $ ; type of plot x: x, $ ; x coordinate y: y, $ ; y coordinate text: text, $ ; text to plot options: options $ ; plot keyword options } plot_ptr[nplot] = ptr_new(pstruct) atv_plotwindow atv_plot1text, nplot endif else begin print, 'Too many calls to ATVPLOT.' endelse end ;---------------------------------------------------------------------- pro atvcontour, z, x, y, _extra = options common atv_pdata common atv_state ; Routine to read in contour plot data and options, store in a heap ; variable structure, and overplot the contours. Data to be contoured ; need not be the same dataset displayed in the atv window, but it ; should have the same x and y dimensions in order to align the ; overplot correctly. if (not(xregistered('atv', /noshow))) then begin print, 'You need to start ATV first!' return endif if (N_params() LT 1) then begin print, 'Too few parameters for ATVCONTOUR.' return endif if (n_params() EQ 1 OR n_params() EQ 2) then begin x = 0 y = 0 endif if (n_elements(options) EQ 0) then options = {c_color: 'red'} if (nplot LT maxplot) then begin nplot = nplot + 1 ; convert color names to index numbers, and set default=red c = where(tag_names(options) EQ 'C_COLOR', count) if (count EQ 0) then options = create_struct(options, 'c_color', 'red') options.c_color = atv_icolor(options.c_color) pstruct = {type: 'contour', $ ; type of plot z: z, $ ; z values x: x, $ ; x coordinate y: y, $ ; y coordinate options: options $ ; plot keyword options } plot_ptr[nplot] = ptr_new(pstruct) atv_plotwindow atv_plot1contour, nplot endif else begin print, 'Too many calls to ATVCONTOUR.' endelse end ;---------------------------------------------------------------------- pro atverase, nerase, norefresh = norefresh common atv_pdata ; Routine to erase line plots from ATVPLOT, text from ATVXYOUTS, and ; contours from ATVCONTOUR. if (n_params() LT 1) then begin nerase = nplot endif else begin if (nerase GT nplot) then nerase = nplot endelse for iplot = nplot - nerase + 1, nplot do begin ptr_free, plot_ptr[iplot] plot_ptr[iplot] = ptr_new() endfor nplot = nplot - nerase if (NOT keyword_set(norefresh)) then atv_refresh end ;---------------------------------------------------------------------- pro atv_textlabel ; widget front end for atvxyouts formdesc = ['0, text, , label_left=Text: , width=15', $ '0, integer, 0, label_left=x: ', $ '0, integer, 0, label_left=y: ', $ '0, droplist, red|black|green|blue|cyan|magenta|yellow|white,label_left=Color:, set_value=0 ', $ '0, float, 2.0, label_left=Charsize: ', $ '0, integer, 1, label_left=Charthick: ', $ '0, integer, 0, label_left=Orientation: ', $ '1, base, , row', $ '0, button, Cancel, quit', $ '0, button, DrawText, quit'] textform = cw_form(formdesc, /column, $ title = 'atv text label') if (textform.tag9 EQ 1) then begin ; switch red and black indices case textform.tag3 of 0: labelcolor = 1 1: labelcolor = 0 else: labelcolor = textform.tag3 endcase atvxyouts, textform.tag1, textform.tag2, textform.tag0, $ color = labelcolor, charsize = textform.tag4, $ charthick = textform.tag5, orientation = textform.tag6 endif end ;--------------------------------------------------------------------- pro atv_oplotcontour ; widget front end for atvcontour common atv_state common atv_images minvalstring = strcompress('0, float, ' + string(state.min_value) + $ ', label_left=MinValue: , width=15 ') maxvalstring = strcompress('0, float, ' + string(state.max_value) + $ ', label_left=MaxValue: , width=15') formdesc = ['0, droplist, red|black|green|blue|cyan|magenta|yellow|white,label_left=Color:, set_value=0 ', $ ; '0, float, 1.0, label_left=Charsize: ', $ ; '0, integer, 1, label_left=Charthick: ', $ '0, droplist, solid|dotted|dashed|dashdot|dashdotdotdot|longdash, label_left=Linestyle: , set_value=0', $ '0, integer, 1, label_left=LineThickness: ', $ minvalstring, $ maxvalstring, $ '0, integer, 6, label_left=NLevels: ', $ '1, base, , row,', $ '0, button, Cancel, quit', $ '0, button, DrawContour, quit'] cform = cw_form(formdesc, /column, $ title = 'atv text label') if (cform.tag8 EQ 1) then begin ; switch red and black indices case cform.tag0 of 0: labelcolor = 1 1: labelcolor = 0 else: labelcolor = cform.tag0 endcase atvcontour, main_image, c_color = labelcolor, $ ; c_charsize = cform.tag1, c_charthick = cform.tag2, $ c_linestyle = cform.tag1, $ c_thick = cform.tag2, $ min_value = cform.tag3, max_value = cform.tag4, $, nlevels = cform.tag5 endif end ;--------------------------------------------------------------------- pro atv_setcompass ; Routine to prompt user for compass parameters common atv_state common atv_images common atv_pdata if (nplot GE maxplot) then begin atv_message, 'Total allowed number of overplots exceeded.', $ msgtype = 'error', /window return endif if (state.wcstype NE 'angle') then begin atv_message, 'Cannot get coordinate info for this image!', $ msgtype = 'error', /window return endif view_min = round(state.centerpix - $ (0.5 * state.draw_window_size / state.zoom_factor)) view_max = round(view_min + state.draw_window_size / state.zoom_factor) - 1 xpos = string(round(view_min[0] + 0.15 * (view_max[0] - view_min[0]))) ypos = string(round(view_min[1] + 0.15 * (view_max[1] - view_min[1]))) xposstring = strcompress('0,integer,'+xpos+',label_left=XCenter: ') yposstring = strcompress('0,integer,'+ypos+',label_left=YCenter: ') formdesc = [ $ xposstring, $ yposstring, $ '0, droplist, Vertex of Compass|Center of Compass, label_left = Coordinates Specify:, set_value=0', $ '0, droplist, red|black|green|blue|cyan|magenta|yellow|white,label_left=Color:, set_value=0 ', $ '0, integer, 1, label_left=LineThickness: ', $ '0, float, 1, label_left=Charsize: ', $ '0, float, 3.5, label_left=ArrowLength: ', $ '1, base, , row,', $ '0, button, Cancel, quit', $ '0, button, DrawCompass, quit'] cform = cw_form(formdesc, /column, $ title = 'atv compass properties') if (cform.tag8 EQ 1) then return cform.tag0 = 0 > cform.tag0 < (state.image_size[0] - 1) cform.tag1 = 0 > cform.tag1 < (state.image_size[1] - 1) ; switch red and black indices case cform.tag3 of 0: labelcolor = 1 1: labelcolor = 0 else: labelcolor = cform.tag3 endcase pstruct = {type: 'compass', $ ; type of plot x: cform.tag0, $ y: cform.tag1, $ notvertex: cform.tag2, $ color: labelcolor, $ thick: cform.tag4, $ charsize: cform.tag5, $ arrowlen: cform.tag6 $ } nplot = nplot + 1 plot_ptr[nplot] = ptr_new(pstruct) atv_plotwindow atv_plot1compass, nplot end ;--------------------------------------------------------------------- pro atv_setscalebar ; Routine to prompt user for scalebar parameters common atv_state common atv_images common atv_pdata if (nplot GE maxplot) then begin atv_message, 'Total allowed number of overplots exceeded.', $ msgtype = 'error', /window return endif if (state.wcstype NE 'angle') then begin atv_message, 'Cannot get coordinate info for this image!', $ msgtype = 'error', /window return endif view_min = round(state.centerpix - $ (0.5 * state.draw_window_size / state.zoom_factor)) view_max = round(view_min + state.draw_window_size / state.zoom_factor) - 1 xpos = string(round(view_min[0] + 0.75 * (view_max[0] - view_min[0]))) ypos = string(round(view_min[1] + 0.15 * (view_max[1] - view_min[1]))) xposstring = strcompress('0,integer,'+xpos+',label_left=X (left end of bar): ') yposstring = strcompress('0,integer,'+ypos+',label_left=Y (center of bar): ') formdesc = [ $ xposstring, $ yposstring, $ '0, float, 5.0, label_left=BarLength: ', $ '0, droplist, arcsec|arcmin, label_left=Units:,set_value=0', $ '0, droplist, red|black|green|blue|cyan|magenta|yellow|white,label_left=Color:, set_value=0 ', $ '0, integer, 1, label_left=LineThickness: ', $ '0, float, 1, label_left=Charsize: ', $ '1, base, , row,', $ '0, button, Cancel, quit', $ '0, button, DrawScalebar, quit'] cform = cw_form(formdesc, /column, $ title = 'atv scalebar properties') if (cform.tag8 EQ 1) then return ; switch red and black indices case cform.tag4 of 0: labelcolor = 1 1: labelcolor = 0 else: labelcolor = cform.tag4 endcase cform.tag0 = 0 > cform.tag0 < (state.image_size[0] - 1) cform.tag1 = 0 > cform.tag1 < (state.image_size[1] - 1) cform.tag3 = abs(cform.tag3 - 1) ; set default to be arcseconds arclen = cform.tag2 if (float(round(arclen)) EQ arclen) then arclen = round(arclen) pstruct = {type: 'scalebar', $ ; type of plot arclen: arclen, $ seconds: cform.tag3, $ position: [cform.tag0,cform.tag1], $ color: labelcolor, $ thick: cform.tag5, $ size: cform.tag6 $ } nplot = nplot + 1 plot_ptr[nplot] = ptr_new(pstruct) atv_plotwindow atv_plot1scalebar, nplot end ;--------------------------------------------------------------------- ; routines for drawing in the lineplot window ;--------------------------------------------------------------------- pro atv_lineplot_init ; This routine creates the window for line plots common atv_state state.lineplot_base_id = $ widget_base(group_leader = state.base_id, $ /column, $ /base_align_right, $ title = 'atv plot', $ /tlb_size_events, $ uvalue = 'lineplot_base') state.lineplot_widget_id = $ widget_draw(state.lineplot_base_id, $ frame = 0, $ scr_xsize = state.lineplot_size[0], $ scr_ysize = state.lineplot_size[1], $ uvalue = 'lineplot_window') lbutton_base = $ widget_base(state.lineplot_base_id, $ /base_align_bottom, $ /row) lineplot_done = $ widget_button(lbutton_base, $ value = 'Done', $ uvalue = 'lineplot_done') widget_control, state.lineplot_base_id, /realize widget_control, state.lineplot_widget_id, get_value = tmp_value state.lineplot_window_id = tmp_value basegeom = widget_info(state.lineplot_base_id, /geometry) drawgeom = widget_info(state.lineplot_widget_id, /geometry) state.lineplot_pad[0] = basegeom.xsize - drawgeom.xsize state.lineplot_pad[1] = basegeom.ysize - drawgeom.ysize xmanager, 'atv_lineplot', state.lineplot_base_id, /no_block atv_resetwindow end ;-------------------------------------------------------------------- pro atv_rowplot common atv_state common atv_images if (not (xregistered('atv_lineplot', /noshow))) then begin atv_lineplot_init endif atv_setwindow, state.lineplot_window_id erase plot, main_image[*, state.coord[1]], $ xst = 3, yst = 3, psym = 10, $ title = strcompress('Plot of row ' + $ string(state.coord[1])), $ xtitle = 'Column', $ ytitle = 'Pixel Value', $ color = 7 widget_control, state.lineplot_base_id, /clear_events atv_resetwindow end ;-------------------------------------------------------------------- pro atv_colplot common atv_state common atv_images if (not (xregistered('atv_lineplot', /noshow))) then begin atv_lineplot_init endif atv_setwindow, state.lineplot_window_id erase plot, main_image[state.coord[0], *], $ xst = 3, yst = 3, psym = 10, $ title = strcompress('Plot of column ' + $ string(state.coord[0])), $ xtitle = 'Row', $ ytitle = 'Pixel Value', $ color = 7 widget_control, state.lineplot_base_id, /clear_events atv_resetwindow end ;-------------------------------------------------------------------- pro atv_surfplot common atv_state common atv_images if (not (xregistered('atv_lineplot', /noshow))) then begin atv_lineplot_init endif atv_setwindow, state.lineplot_window_id erase plotsize = $ fix(min([50, state.image_size[0]/2., state.image_size[1]/2.])) center = plotsize > state.coord < (state.image_size - plotsize) tmp_string = $ strcompress('Surface plot of ' + $ strcompress('['+string(center[0]-plotsize)+ $ ':'+string(center[0]+plotsize-1)+ $ ','+string(center[1]-plotsize)+ $ ':'+string(center[1]+plotsize-1)+ $ ']', /remove_all)) surface, $ main_image[center[0]-plotsize:center[0]+plotsize-1, $ center[1]-plotsize:center[1]+plotsize-1], $ title = temporary(tmp_string), $ xtitle = 'X', ytitle = 'Y', ztitle = 'Pixel Value', $ color = 7 widget_control, state.lineplot_base_id, /clear_events atv_resetwindow end ;-------------------------------------------------------------------- pro atv_contourplot common atv_state common atv_images if (not (xregistered('atv_lineplot', /noshow))) then begin atv_lineplot_init endif atv_setwindow, state.lineplot_window_id erase plotsize = $ fix(min([50, state.image_size[0]/2., state.image_size[1]/2.])) center = plotsize > state.coord < (state.image_size - plotsize) contour_image = main_image[center[0]-plotsize:center[0]+plotsize-1, $ center[1]-plotsize:center[1]+plotsize-1] if (state.scaling EQ 1) then begin contour_image = alog10(contour_image) logflag = 'Log' endif else begin logflag = '' endelse tmp_string = $ strcompress(logflag + $ ' Contour plot of ' + $ strcompress('['+string(round(center[0]-plotsize))+ $ ':'+string(round(center[0]+plotsize-1))+ $ ','+string(round(center[1]-plotsize))+ $ ':'+string(round(center[1]+plotsize-1))+ $ ']', /remove_all)) contour, temporary(contour_image), $ nlevels = 10, $ /follow, $ title = temporary(tmp_string), $ xtitle = 'X', ytitle = 'Y', color = 7 widget_control, state.lineplot_base_id, /clear_events atv_resetwindow end ;---------------------------------------------------------------------- pro atv_lineplot_event, event common atv_state widget_control, event.id, get_uvalue = uvalue case uvalue of 'lineplot_done': widget_control, event.top, /destroy 'lineplot_base': begin ; Resize event atv_setwindow, state.lineplot_window_id state.lineplot_size = [event.x, event.y]- state.lineplot_pad widget_control, state.lineplot_widget_id, $ xsize = (state.lineplot_size[0] > 100), $ ysize = (state.lineplot_size[1] > 100) atv_resetwindow end else: endcase end ;---------------------------------------------------------------------- ; help window ;--------------------------------------------------------------------- pro atv_help common atv_state h = strarr(110) i = 0 h[i] = 'ATV HELP' i = i + 1 h[i] = '' i = i + 1 h[i] = 'MENU BAR:' i = i + 1 h[i] = 'File->ReadFits: Read in a new fits image from disk' i = i + 1 h[i] = 'File->WritePS: Write a PostScript file of the current display' i = i + 1 h[i] = 'File->WriteTiff: Write a tiff image of the current display' i = i + 1 h[i] = 'File->Quit: Quits atv' i = i + 1 h[i] = 'ColorMap Menu: Selects color table' i = i + 1 h[i] = 'Scaling Menu: Selects linear, log, or histogram-equalized scaling' i = i + 1 h[i] = 'Labels->TextLabel: Brings up a dialog box for text input' i = i + 1 h[i] = 'Labels->Contour: Brings up a dialog box for overplotting contours' i = i + 1 h[i] = 'Labels->Compass: Draws a compass (requires WCS info in header)' i = i + 1 h[i] = 'Labels->Scalebar: Draws a scale bar (requires WCS info in header)' i = i + 1 h[i] = 'Labels->EraseLast: Erases the most recent plot label' i = i + 1 h[i] = 'Labels->EraseAll: Erases all plot labels' i = i + 1 h[i] = 'Blink->SetBlink: Sets the current display to be the blink image' i = i + 1 h[i] = ' for mouse button 1, 2, or 3' i = i + 1 h[i] = 'ImageInfo->Photometry: Brings up photometry window' i = i + 1 h[i] = 'ImageInfo->ImageHeader: Display the FITS header, if there is one.' i = i + 1 h[i] = 'ImageInfo menu also gives a choice of coordinate systems, ' i = i + 1 h[i] = ' or of native image coordinates (default), for images with a WCS.' i = i + 1 h[i] = '' i = i + 1 h[i] = 'CONTROL PANEL ITEMS:' i = i + 1 h[i] = 'Min: shows minimum data value displayed; enter new min value here' i = i + 1 h[i] = 'Max: shows maximum data value displayed; enter new max value here' i = i + 1 h[i] = 'Pan Window: use mouse to drag the image-view box around' i = i + 1 h[i] = '' i = i + 1 h[i] = 'MOUSE MODE SELECTOR:' i = i + 1 h[i] = 'Color: sets color-stretch mode:' i = i + 1 h[i] = ' With mouse button 1 down, drag mouse to change the color stretch. ' i = i + 1 h[i] = ' Move vertically to change contrast, and' i = i + 1 h[i] = ' horizontally to change brightness.' i = i + 1 h[i] = ' button 2 or 3: center on current position' i = i + 1 h[i] = 'Zoom: sets zoom mode:' i = i + 1 h[i] = ' button1: zoom in & center on current position' i = i + 1 h[i] = ' button2: center on current position' i = i + 1 h[i] = ' button3: zoom out & center on current position' i = i + 1 h[i] = 'Blink: sets blink mode:' i = i + 1 h[i] = ' press mouse button in main window to show blink image' i = i + 1 h[i] = 'ImExam: sets ImageExamine mode:' i = i + 1 h[i] = ' button 1: photometry' i = i + 1 h[i] = ' button 2: center on current position' i = i + 1 h[i] = ' button 3: image statistics' i = i + 2 h[i] = 'BUTTONS:' i = i + 1 h[i] = 'Invert: inverts the current color table' i = i + 1 h[i] = 'Restretch: sets min and max to preserve display colors while linearizing the color table' i = i + 1 h[i] = 'AutoScale: sets min and max to show data values around image median' i = i + 1 h[i] = 'FullRange: sets min and max to show the full data range of the image' i = i + 1 h[i] = 'ZoomIn: zooms in by x2' i = i + 1 h[i] = 'ZoomOut: zooms out by x2' i = i + 1 h[i] = 'Zoom1: sets zoom level to original scale' i = i + 1 h[i] = 'Center: centers image on display window' i = i + 1 h[i] = 'Done: quits atv' i = i + 1 h[i] = '' i = i + 1 h[i] = 'Keyboard commands in display window:' i = i + 1 h[i] = ' Arrow keys or numeric keypad (with NUM LOCK on) moves cursor' i = i + 1 h[i] = ' r: row plot' i = i + 1 h[i] = ' c: column plot' i = i + 1 h[i] = ' s: surface plot' i = i + 1 h[i] = ' t: contour plot' i = i + 1 h[i] = ' p: aperture photometry at current position' i = i + 1 h[i] = ' i: image statistics at current position' i = i + 1 h[i] = ' q: quits atv' i = i + 2 h[i] = 'IDL COMMAND LINE HELP:' i = i + 1 h[i] = 'To pass an array to atv:' i = i + 1 h[i] = ' atv, array_name [, options]' i = i + 1 h[i] = 'To pass a fits filename to atv:' i = i + 1 h[i] = ' atv, fitsfile_name [, options] (enclose filename in single quotes) ' i = i + 1 h[i] = 'Command-line options are: ' i = i + 1 h[i] = ' [,min = min_value] [,max=max_value] [,/linear] [,/log] [,/histeq]' i = i + 1 h[i] = ' [,/block] [,/align] [,/stretch] [,header=header]' i = i + 2 h[i] = 'To overplot a contour plot on the draw window:' i = i + 1 h[i] = ' atvcontour, array_name [, options...]' i = i + 1 h[i] = 'To overplot text on the draw window: ' i = i + 1 h[i] = ' atvxyouts, x, y, text_string [, options] (enclose string in single quotes)' i = i + 1 h[i] = 'To overplot points or lines on the current plot:' i = i + 1 h[i] = ' atvplot, xvector, yvector [, options]' i = i + 2 h[i] = 'The options for atvcontour, atvxyouts, and atvplot are essentially' i = i + 1 h[i] = 'the same as those for the idl contour, xyouts, and plot commands,' i = i + 1 h[i] = 'except that data coordinates are always used.' i = i + 1 h[i] = 'The default color for overplots is red.' i = i + 2 h[i] = 'The lowest 8 entries in the color table are:' i = i + 1 h[i] = ' 0 = black' i = i + 1 h[i] = ' 1 = red' i = i + 1 h[i] = ' 2 = green' i = i + 1 h[i] = ' 3 = blue' i = i + 1 h[i] = ' 4 = cyan' i = i + 1 h[i] = ' 5 = magenta' i = i + 1 h[i] = ' 6 = yellow' i = i + 1 h[i] = ' 7 = white' i = i + 1 h[i] = ' The top entry in the color table is also reserved for white. ' i = i + 2 h[i] = 'Other commands:' i = i + 1 h[i] = 'atverase [, N]: erases all (or last N) plots and text' i = i + 1 h[i] = 'atv_shutdown: quits atv' i = i + 1 h[i] = 'NOTE: If atv should crash, type atv_shutdown at the idl prompt.' i = i + 5 h[i] = strcompress('ATV.PRO version '+state.version) i = i + 1 h[i] = 'For full instructions, or to download the most recent version, go to:' i = i + 1 h[i] = 'http://www.physics.uci.edu/~barth/atv' if (not (xregistered('atv_help', /noshow))) then begin helptitle = strcompress('atv v' + state.version + ' help') help_base = widget_base(group_leader = state.base_id, $ /column, $ /base_align_right, $ title = helptitle, $ uvalue = 'help_base') help_text = widget_text(help_base, $ /scroll, $ value = h, $ xsize = 85, $ ysize = 24) help_done = widget_button(help_base, $ value = 'Done', $ uvalue = 'help_done') widget_control, help_base, /realize xmanager, 'atv_help', help_base, /no_block endif end ;---------------------------------------------------------------------- pro atv_help_event, event widget_control, event.id, get_uvalue = uvalue case uvalue of 'help_done': widget_control, event.top, /destroy else: endcase end ;---------------------------------------------------------------------- ; Routines for displaying image statistics ;---------------------------------------------------------------------- pro atv_stats_refresh ; Calculate box statistics and update the results common atv_state common atv_images b = round((state.statboxsize - 1) / 2) xmin = 0 > (state.cursorpos[0] - b) < (state.image_size[0] - 1) xmax = 0 > (state.cursorpos[0] + b) < (state.image_size[0] - 1) ymin = 0 > (state.cursorpos[1] - b) < (state.image_size[1] - 1) ymax = 0 > (state.cursorpos[1] + b) < (state.image_size[1] - 1) xmin = round(xmin) xmax = round(xmax) ymin = round(ymin) ymax = round(ymax) cut = float(main_image[xmin:xmax, ymin:ymax]) npix = (xmax - xmin + 1) * (ymax - ymin + 1) cutmin = min(cut, max=maxx, /nan) cutmax = maxx cutmean = mean(cut, /nan) cutmedian = median(cut) cutstddev = stddev(cut) widget_control, state.statbox_id, set_value=state.statboxsize widget_control, state.statxcenter_id, set_value = state.cursorpos[0] widget_control, state.statycenter_id, set_value = state.cursorpos[1] tmp_string = strcompress('# Pixels in Box: ' + string(npix)) widget_control, state.stat_npix_id, set_value = tmp_string tmp_string = strcompress('Min: ' + string(cutmin)) widget_control, state.statbox_min_id, set_value = tmp_string tmp_string = strcompress('Max: ' + string(cutmax)) widget_control, state.statbox_max_id, set_value = tmp_string tmp_string = strcompress('Mean: ' + string(cutmean)) widget_control, state.statbox_mean_id, set_value = tmp_string tmp_string = strcompress('Median: ' + string(cutmedian)) widget_control, state.statbox_median_id, set_value = tmp_string tmp_string = strcompress('StdDev: ' + string(cutstddev)) widget_control, state.statbox_stdev_id, set_value = tmp_string atv_tvstats end ;---------------------------------------------------------------------- pro atv_stats_event, event common atv_state common atv_images widget_control, event.id, get_uvalue = uvalue case uvalue of 'statbox': begin state.statboxsize = long(event.value) > 3 if ( (state.statboxsize / 2 ) EQ $ round(state.statboxsize / 2.)) then $ state.statboxsize = state.statboxsize + 1 atv_stats_refresh end 'statxcenter': begin state.cursorpos[0] = 0 > long(event.value) < (state.image_size[0] - 1) atv_stats_refresh end 'statycenter': begin state.cursorpos[1] = 0 > long(event.value) < (state.image_size[1] - 1) atv_stats_refresh end 'showstatzoom': begin widget_control, state.showstatzoom_id, get_value=val case val of 'Show Region': begin widget_control, state.statzoom_widget_id, $ xsize=state.statzoom_size, ysize=state.statzoom_size widget_control, state.showstatzoom_id, $ set_value='Hide Region' end 'Hide Region': begin widget_control, state.statzoom_widget_id, $ xsize=1, ysize=1 widget_control, state.showstatzoom_id, $ set_value='Show Region' end endcase atv_stats_refresh end 'stats_done': widget_control, event.top, /destroy else: endcase end ;---------------------------------------------------------------------- pro atv_showstats ; Brings up a widget window for displaying image statistics common atv_state common atv_images common atv_state state.cursorpos = state.coord if (not (xregistered('atv_stats', /noshow))) then begin stats_base = $ widget_base(group_leader = state.base_id, $ /column, $ /base_align_center, $ title = 'atv image statistics', $ uvalue = 'stats_base') state.stats_base_id = stats_base stats_nbase = widget_base(stats_base, /row, /base_align_center) stats_base1 = widget_base(stats_nbase, /column, frame=1) stats_base2 = widget_base(stats_nbase, /column) stats_base2a = widget_base(stats_base2, /column, frame=1) stats_zoombase = widget_base(stats_base, /column) tmp_string = strcompress('Image size: ' + $ string(state.image_size[0]) + $ ' x ' + $ string(state.image_size[1])) size_label = widget_label(stats_base1, value = tmp_string) tmp_string = strcompress('Image Min: ' + string(state.image_min)) min_label= widget_label(stats_base1, value = tmp_string) tmp_string = strcompress('Image Max: ' + string(state.image_max)) max_label= widget_label(stats_base1, value = tmp_string) state.statbox_id = $ cw_field(stats_base1, $ /long, $ /return_events, $ title = 'Box Size for Stats:', $ uvalue = 'statbox', $ value = state.statboxsize, $ xsize = 5) state.statxcenter_id = $ cw_field(stats_base1, $ /long, $ /return_events, $ title = 'Box X Center:', $ uvalue = 'statxcenter', $ value = state.cursorpos[0], $ xsize = 5) state.statycenter_id = $ cw_field(stats_base1, $ /long, $ /return_events, $ title = 'Box Y Center:', $ uvalue = 'statycenter', $ value = state.cursorpos[1], $ xsize = 5) tmp_string = strcompress('# Pixels in Box: ' + string(100000)) state.stat_npix_id = widget_label(stats_base2a, value = tmp_string) tmp_string = strcompress('Min: ' + '0.00000000') state.statbox_min_id = widget_label(stats_base2a, value = tmp_string) tmp_string = strcompress('Max: ' + '0.00000000') state.statbox_max_id = widget_label(stats_base2a, value = tmp_string) tmp_string = strcompress('Mean: ' + '0.00000000') state.statbox_mean_id = widget_label(stats_base2a, value = tmp_string) tmp_string = strcompress('Median: ' + '0.00000000') state.statbox_median_id = widget_label(stats_base2a, value = tmp_string) tmp_string = strcompress('StdDev: ' + '0.00000000') state.statbox_stdev_id = widget_label(stats_base2a, value = tmp_string) state.showstatzoom_id = widget_button(stats_base2, $ value = 'Show Region', uvalue = 'showstatzoom') stat_done = $ widget_button(stats_base2, $ value = 'Done', $ uvalue = 'stats_done') state.statzoom_widget_id = widget_draw(stats_zoombase, $ scr_xsize = 1, scr_ysize = 1) widget_control, stats_base, /realize xmanager, 'atv_stats', stats_base, /no_block widget_control, state.statzoom_widget_id, get_value = tmp_val state.statzoom_window_id = tmp_val atv_resetwindow endif atv_stats_refresh end ;--------------------------------------------------------------------- pro atv_tvstats ; Routine to display the zoomed region around a stats point common atv_state common atv_images atv_setwindow, state.statzoom_window_id erase x = round(state.cursorpos[0]) y = round(state.cursorpos[1]) boxsize = (state.statboxsize - 1) / 2 xsize = state.statboxsize ysize = state.statboxsize image = bytarr(xsize,ysize) xmin = (0 > (x - boxsize)) xmax = ((x + boxsize) < (state.image_size[0] - 1) ) ymin = (0 > (y - boxsize) ) ymax = ((y + boxsize) < (state.image_size[1] - 1)) startx = abs( (x - boxsize) < 0 ) starty = abs( (y - boxsize) < 0 ) image[startx, starty] = scaled_image[xmin:xmax, ymin:ymax] xs = indgen(xsize) + xmin - startx ys = indgen(ysize) + ymin - starty xs_delta = (xs[xsize-1] - xs[0]) / float(xsize - 1.0) ys_delta = (ys[ysize-1] - ys[0]) / float(ysize - 1.0) x_ran = [xs[0]-xs_delta/2.0,xs[xsize-1]+xs_delta/2.0] y_ran = [ys[0]-ys_delta/2.0,ys[ysize-1]+ys_delta/2.0] dev_width = 0.8 * state.statzoom_size dev_pos = [0.15 * state.statzoom_size, $ 0.15 * state.statzoom_size, $ 0.95 * state.statzoom_size, $ 0.95 * state.statzoom_size] x_factor = dev_width / xsize y_factor = dev_width / ysize x_offset = (x_factor - 1.0) / x_factor / 2.0 y_offset = (y_factor - 1.0) / y_factor / 2.0 xi = findgen(dev_width) / x_factor - x_offset ;x interp index yi = findgen(dev_width) / y_factor - y_offset ;y interp index image = Poly_2D(image, [[0,0],[1.0/x_factor,0]], $ [[0,1.0/y_factor],[0,0]], $ 0, dev_width, dev_width) xsize = (size(image))[1] ysize = (size(image))[2] out_xs = xi * xs_delta + xs[0] out_ys = yi * ys_delta + ys[0] sz = size(image) xsize = Float(sz[1]) ;image width ysize = Float(sz[2]) ;image height dev_width = dev_pos[2] - dev_pos[0] + 1 dev_width = dev_pos[3] - dev_pos[1] + 1 tv, image, /device, dev_pos[0], dev_pos[1], $ xsize=dev_pos[2]-dev_pos[0], $ ysize=dev_pos[3]-dev_pos[1] plot, [0, 1], /noerase, /nodata, xstyle = 1, ystyle = 1, $ /device, position = dev_pos, color=7, $ xrange = x_ran, yrange = y_ran atv_resetwindow end ;---------------------------------------------------------------------- ; aperture photometry and radial profile routines ;--------------------------------------------------------------------- pro atv_imcenterf, xcen, ycen ; program to calculate the center of mass of an image around ; the point (x,y), return the answer in (xcen,ycen). ; ; by M. Liu, adapted for inclusion in ATV by AJB ; ; ALGORITHM: ; 1. first finds max pixel value in ; a 'bigbox' box around the cursor ; 2. then calculates centroid around the object ; 3. iterates, recalculating the center of mass ; around centroid until the shifts become smaller ; than MINSHIFT (0.3 pixels) common atv_images common atv_state ; iteration controls MINSHIFT = 0.3 ; max possible x or y direction shift MAXSHIFT = 3 ; Bug fix 4/16/2000: added call to round to make sure bigbox is an integer bigbox=round(1.5*state.centerboxsize) sz = size(main_image) ; box size must be odd dc = (state.centerboxsize-1)/2 if ( (bigbox / 2 ) EQ round(bigbox / 2.)) then bigbox = bigbox + 1 db = (bigbox-1)/2 ; need to start with integers xx = state.cursorpos[0] yy = state.cursorpos[1] ; first find max pixel in box around the cursor x0 = (xx-db) > 0 x1 = (xx+db) < (sz(1)-1) y0 = (yy-db) > 0 y1 = (yy+db) < (sz(2)-1) cut = main_image[x0:x1,y0:y1] cutmax = max(cut) w=where(cut EQ cutmax) cutsize = size(cut) my = (floor(w/cutsize[1]))[0] mx = (w - my*cutsize[1])[0] xx = mx + x0 yy = my + y0 xcen = xx ycen = yy ; then find centroid if (n_elements(xcen) gt 1) then begin xx = round(total(xcen)/n_elements(xcen)) yy = round(total(ycen)/n_elements(ycen)) endif done = 0 niter = 1 ; cut out relevant portion sz = size(main_image) x0 = round((xx-dc) > 0) ; need the ()'s x1 = round((xx+dc) < (sz[1]-1)) y0 = round((yy-dc) > 0) y1 = round((yy+dc) < (sz[2]-1)) xs = x1 - x0 + 1 ys = y1 - y0 + 1 cut = float(main_image[x0:x1, y0:y1]) ; find x position of center of mass cenxx = fltarr(xs, ys, /nozero) for i = 0L, (xs-1) do $ ; column loop cenxx[i, *] = cut[i, *] * i xcen = total(cenxx) / total(cut) + x0 ; find y position of center of mass cenyy = fltarr(xs, ys, /nozero) for i = 0L, (ys-1) do $ ; row loop cenyy[*, i] = cut[*, i] * i ycen = total(cenyy) / total(cut) + y0 if (abs(xcen-state.cursorpos[0]) gt MAXSHIFT) or $ (abs(ycen-state.cursorpos[1]) gt MAXSHIFT) then begin state.photwarning = 'Warning: Possible mis-centering?' endif end ;---------------------------------------------------------------------- function atv_splinefwhm, rad, prof, splrad, splprof ; given a radial profile (counts vs radius) will use ; a spline to extract the FWHM ; ; ALGORITHM ; finds peak in radial profile, then marches along until finds ; where radial profile has dropped to half of that, ; assumes peak value of radial profile is at minimum radius ; ; original version by M. Liu, adapted for ATV by AJB common atv_state nrad = n_elements(rad) ; check the peak w = where(prof eq max(prof)) if float(rad(w[0])) ne min(rad) then begin state.photwarning = 'Warning: Profile peak is off-center!' return,-1 endif ; interpolate radial profile at 50 times as many points splrad = min(rad) + findgen(nrad*50+1) * (max(rad)-min(rad)) / (nrad*50) nspl = n_elements(splrad) ; spline the profile splprof = spline(rad,prof,splrad) ; march along splined profile until cross 0.5*peak value found = 0 i = 0 repeat begin if splprof(i) lt 0.5*max(splprof) then $ found = 1 $ else $ i = i+1 endrep until ((found) or (i eq nspl)) if (i lt 2) or (i eq nspl) then begin state.photwarning = 'Warning: Unable to measure FWHM!' return,-1 endif ; now interpolate across the 2 points straddling the 0.5*peak fwhm = splrad(i)+splrad(i-1) return,fwhm end ;----------------------------------------------------------------------- pro atv_radplotf, x, y, fwhm ; Program to calculate radial profile of an image ; given aperture location, range of sizes, and inner and ; outer radius for sky subtraction annulus. Calculates sky by ; median. ; ; original version by M. Liu, adapted for inclusion in ATV by AJB common atv_state common atv_images ; set defaults inrad = 0.5*sqrt(2) outrad = round(state.outersky * 1.2) drad=1. insky = outrad+drad outsky = insky+drad+20. ; initialize arrays inrad = float(inrad) outrad = float(outrad) drad = float(drad) nrad = ceil((outrad-inrad)/drad) + 1 out = fltarr(nrad,12) ; extract relevant image subset (may be rectangular), translate coord origin, ; bounded by edges of image ; (there must be a cute IDL way to do this neater) sz = size(main_image) x0 = floor(x-outsky) x1 = ceil(x+outsky) ; one pixel too many? y0 = floor(y-outsky) y1 = ceil(y+outsky) x0 = x0 > 0.0 x1 = x1 < (sz[1]-1) y0 = y0 > 0.0 y1 = y1 < (sz[2]-1) nx = x1 - x0 + 1 ny = y1 - y0 + 1 ; trim the image, translate coords img = main_image[x0:x1,y0:y1] xcen = x - x0 ycen = y - y0 ; for debugging, can make some masks showing different regions skyimg = fltarr(nx,ny) ; don't use /nozero!! photimg = fltarr(nx,ny) ; don't use /nozero!! ; makes an array of (distance)^2 from center of aperture ; where distance is the radial or the semi-major axis distance. ; based on DIST_CIRCLE and DIST_ELLIPSE in Goddard IDL package, ; but deals with rectangular image sections distsq = fltarr(nx,ny,/nozero) xx = findgen(nx) yy = findgen(ny) x2 = (xx - xcen)^(2.0) y2 = (yy - ycen)^(2.0) for i = 0L,(ny-1) do $ ; row loop distsq[*,i] = x2 + y2(i) ; get sky level by masking and then medianing remaining pixels ; note use of "gt" to avoid picking same pixels as flux aperture ns = 0 msky = 0.0 errsky = 0.0 in2 = insky^(2.0) out2 = outsky^(2.0) if (in2 LT max(distsq)) then begin w = where((distsq gt in2) and (distsq le out2),ns) skyann = img[w] endif else begin w = where(distsq EQ distsq) skyann = img[w] state.photwarning = 'Not enough pixels in sky!' endelse msky = median(skyann) errsky = stddev(skyann) skyimg[w] = -5.0 photimg = skyimg errsky2 = errsky * errsky out[*,8] = msky out[*,9] = ns out[*,10]= errsky ; now loop through photometry radii, finding the total flux, differential ; flux, and differential average pixel value along with 1 sigma scatter ; relies on the fact the output array is full of zeroes for i = 0,nrad-1 do begin dr = drad if i eq 0 then begin rin = 0.0 rout = inrad rin2 = -0.01 endif else begin rin = inrad + drad *(i-1) rout = (rin + drad) < outrad rin2 = rin*rin endelse rout2 = rout*rout ; get flux and pixel stats in annulus, wary of counting pixels twice ; checking if necessary if there are pixels in the sector w = where(distsq gt rin2 and distsq le rout2,np) pfrac = 1.0 ; fraction of pixels in each annulus used if np gt 0 then begin ann = img[w] dflux = total(ann) * 1./pfrac dnpix = np dnet = dflux - (dnpix * msky) * 1./pfrac davg = dnet / (dnpix * 1./pfrac) if np gt 1 then dsig = stddev(ann) else dsig = 0.00 ; std dev in each annulus including sky sub error derr = sqrt(dsig*dsig + errsky2) photimg[w] = rout2 out[i,0] = (rout+rin)/2.0 out[i,1] = out[i-1>0,1] + dflux out[i,2] = out[i-1>0,2] + dnet out[i,3] = out[i-1>0,3] + dnpix out[i,4] = dflux out[i,5] = dnpix out[i,6] = davg out[i,7] = dsig out[i,11] = derr endif else if (i ne 0) then begin out[i,0]= rout out[i,1:3] = out[i-1,1:3] out[i, 4:7] = 0.0 out[i,11] = 0.0 endif else begin out[i, 0] = rout endelse endfor ; fill radpts array after done with differential photometry w = where(distsq ge 0.0 and distsq le outrad*outrad) radpts = dblarr(2,n_elements(w)) radpts[0,*] = sqrt(distsq[w]) radpts[1,*] = img[w] ; compute FWHM via spline interpolation of radial profile fwhm = atv_splinefwhm(out[*,0],out[*,6]) ; plot the results if n_elements(radpts(1, *)) gt 100 then pp = 3 else pp = 1 plot, radpts(0, *), radpts(1, *), /nodata, xtitle = 'Radius (pixels)', $ ytitle = 'Counts', color=7, charsize=1.2 oplot, radpts(0, *), radpts(1, *), psym = pp, color=6 oploterror, out(*, 0), out(*, 6)+out(*, 8), $ out(*, 11)/sqrt(out(*, 5)), psym=-4, color=7, errcolor=7 end ;----------------------------------------------------------------------- pro atv_apphot_refresh ; Do aperture photometry using idlastro daophot routines. common atv_state common atv_images state.photwarning = 'Warnings: None.' ; Center on the object position nearest to the cursor if (state.centerboxsize GT 0) then begin atv_imcenterf, x, y endif else begin ; no centering x = state.cursorpos[0] y = state.cursorpos[1] endelse ; Make sure that object position is on the image x = 0 > x < (state.image_size[0] - 1) y = 0 > y < (state.image_size[1] - 1) if ((x - state.outersky) LT 0) OR $ ((x + state.outersky) GT (state.image_size[0] - 1)) OR $ ((y - state.outersky) LT 0) OR $ ((y + state.outersky) GT (state.image_size[1] - 1)) then $ state.photwarning = 'Warning: Sky apertures fall outside image!' ; Condition to test whether phot aperture is off the image if (x LT state.r) OR $ ((state.image_size[0] - x) LT state.r) OR $ (y LT state.r) OR $ ((state.image_size[1] - y) LT state.r) then begin flux = -1. state.photwarning = 'Warning: Aperture Outside Image Border!' endif phpadu = 1.0 ; don't convert counts to electrons apr = [state.r] skyrad = [state.innersky, state.outersky] ; Assume that all pixel values are good data badpix = [state.image_min-1, state.image_max+1] if (state.skytype EQ 1) then begin ; calculate median sky value xmin = (x - state.outersky) > 0 xmax = (xmin + (2 * state.outersky + 1)) < (state.image_size[0] - 1) ymin = (y - state.outersky) > 0 ymax = (ymin + (2 * state.outersky + 1)) < (state.image_size[1] - 1) small_image = main_image[xmin:xmax, ymin:ymax] nx = (size(small_image))[1] ny = (size(small_image))[2] i = lindgen(nx)#(lonarr(ny)+1) j = (lonarr(nx)+1)#lindgen(ny) xc = x - xmin yc = y - ymin w = where( (((i - xc)^2 + (j - yc)^2) GE state.innersky^2) AND $ (((i - xc)^2 + (j - yc)^2) LE state.outersky^2), nw) if ((x - state.outersky) LT 0) OR $ ((x + state.outersky) GT (state.image_size[0] - 1)) OR $ ((y - state.outersky) LT 0) OR $ ((y + state.outersky) GT (state.image_size[1] - 1)) then $ state.photwarning = 'Warning: Sky apertures fall outside image!' if (nw GT 0) then begin skyval = median(small_image(w)) endif else begin skyval = -1 state.photwarning = 'Warning: No pixels in sky!' endelse endif ; Do the photometry now case state.skytype of 0: aper, main_image, [x], [y], flux, errap, sky, skyerr, phpadu, apr, $ skyrad, badpix, flux=abs(state.magunits-1), /silent 1: aper, main_image, [x], [y], flux, errap, sky, skyerr, phpadu, apr, $ skyrad, badpix, flux=abs(state.magunits-1), /silent, $ setskyval = skyval 2: aper, main_image, [x], [y], flux, errap, sky, skyerr, phpadu, apr, $ skyrad, badpix, flux=abs(state.magunits-1), /silent, $ setskyval = 0 endcase flux = flux[0] sky = sky[0] if (flux EQ 99.999) then begin state.photwarning = 'Warning: Error in computing flux!' flux = -1.0 endif if (state.magunits EQ 1) then begin ; apply zeropoint flux = flux + state.photzpt - 25.0 endif ; Run atv_radplotf and plot the results atv_setwindow, state.radplot_window_id atv_radplotf, x, y, fwhm ; overplot the phot apertures on radial plot plots, [state.r, state.r], !y.crange, line = 1, color=2, thick=2, psym=0 xyouts, /data, state.r, !y.crange(1)*0.92, ' aprad', $ color=2, charsize=1.5 if (state.skytype NE 2) then begin plots, [state.innersky,state.innersky], !y.crange, $ line = 1, color=4, thick=2, psym=0 xyouts, /data, state.innersky, !y.crange(1)*0.85, ' insky', $ color=4, charsize=1.5 plots, [state.outersky,state.outersky], !y.crange, $ line = 1, color=5, thick=2, psym=0 xyouts, /data, state.outersky * 0.82, !y.crange(1)*0.75, ' outsky', $ color=5, charsize=1.5 endif plots, !x.crange, [sky, sky], color=1, thick=2, psym=0, line = 2 xyouts, /data, state.innersky + (0.1*(state.outersky-state.innersky)), $ sky+0.06*(!y.crange[1] - sky), 'sky level', color=1, charsize=1.5 atv_resetwindow ; output the results case state.magunits of 0: fluxstr = 'Object counts: ' 1: fluxstr = 'Magnitude: ' endcase state.centerpos = [x, y] tmp_string = string(state.cursorpos[0], state.cursorpos[1], $ format = '("Cursor position: x=",i4," y=",i4)' ) tmp_string1 = string(state.centerpos[0], state.centerpos[1], $ format = '("Object centroid: x=",f6.1," y=",f6.1)' ) tmp_string2 = strcompress(fluxstr+string(flux, format = '(g12.6)' )) tmp_string3 = string(sky, format = '("Sky level: ",g12.6)' ) tmp_string4 = string(fwhm, format='("FWHM (pix): ",g7.3)' ) widget_control, state.centerbox_id, set_value = state.centerboxsize widget_control, state.cursorpos_id, set_value = tmp_string widget_control, state.centerpos_id, set_value = tmp_string1 widget_control, state.radius_id, set_value = state.r widget_control, state.outersky_id, set_value = state.outersky widget_control, state.innersky_id, set_value = state.innersky widget_control, state.skyresult_id, set_value = tmp_string3 widget_control, state.photresult_id, set_value = tmp_string2 widget_control, state.fwhm_id, set_value = tmp_string4 widget_control, state.photwarning_id, set_value=state.photwarning ; Uncomment next lines if you want atv to output the WCS coords of ; the centroid for the photometry object: ;if (state.wcstype EQ 'angle') then begin ; xy2ad, state.centerpos[0], state.centerpos[1], *(state.astr_ptr), $ ; clon, clat ; wcsstring = atv_wcsstring(clon, clat, (*state.astr_ptr).ctype, $ ; state.equinox, state.display_coord_sys, state.display_equinox) ; print, 'Centroid WCS coords: ', wcsstring ;endif atv_tvphot atv_resetwindow end ;---------------------------------------------------------------------- pro atv_tvphot ; Routine to display the zoomed region around a photometry point, ; with circles showing the photometric apterture and sky radii. common atv_state common atv_images atv_setwindow, state.photzoom_window_id erase x = round(state.centerpos[0]) y = round(state.centerpos[1]) boxsize = round(state.outersky * 1.2) xsize = (2 * boxsize) + 1 ysize = (2 * boxsize) + 1 image = bytarr(xsize,ysize) xmin = (0 > (x - boxsize)) xmax = ((x + boxsize) < (state.image_size[0] - 1) ) ymin = (0 > (y - boxsize) ) ymax = ((y + boxsize) < (state.image_size[1] - 1)) startx = abs( (x - boxsize) < 0 ) starty = abs( (y - boxsize) < 0 ) image[startx, starty] = scaled_image[xmin:xmax, ymin:ymax] xs = indgen(xsize) + xmin - startx ys = indgen(ysize) + ymin - starty xs_delta = (xs[xsize-1] - xs[0]) / float(xsize - 1.0) ys_delta = (ys[ysize-1] - ys[0]) / float(ysize - 1.0) x_ran = [xs[0]-xs_delta/2.0,xs[xsize-1]+xs_delta/2.0] y_ran = [ys[0]-ys_delta/2.0,ys[ysize-1]+ys_delta/2.0] dev_width = 0.8 * state.photzoom_size dev_pos = [0.15 * state.photzoom_size, $ 0.15 * state.photzoom_size, $ 0.95 * state.photzoom_size, $ 0.95 * state.photzoom_size] x_factor = dev_width / xsize y_factor = dev_width / ysize x_offset = (x_factor - 1.0) / x_factor / 2.0 y_offset = (y_factor - 1.0) / y_factor / 2.0 xi = findgen(dev_width) / x_factor - x_offset ;x interp index yi = findgen(dev_width) / y_factor - y_offset ;y interp index image = Poly_2D(image, [[0,0],[1.0/x_factor,0]], $ [[0,1.0/y_factor],[0,0]], $ 0, dev_width, dev_width) xsize = (size(image))[1] ysize = (size(image))[2] out_xs = xi * xs_delta + xs[0] out_ys = yi * ys_delta + ys[0] sz = size(image) xsize = Float(sz[1]) ;image width ysize = Float(sz[2]) ;image height dev_width = dev_pos[2] - dev_pos[0] + 1 dev_width = dev_pos[3] - dev_pos[1] + 1 tv, image, /device, dev_pos[0], dev_pos[1], $ xsize=dev_pos[2]-dev_pos[0], $ ysize=dev_pos[3]-dev_pos[1] plot, [0, 1], /noerase, /nodata, xstyle = 1, ystyle = 1, $ /device, position = dev_pos, color=7, $ xrange = x_ran, yrange = y_ran tvcircle, /data, state.r, state.centerpos[0], state.centerpos[1], $ color=2, thick=2, psym=0 if (state.skytype NE 2) then begin tvcircle, /data, state.innersky, state.centerpos[0], state.centerpos[1], $ color=4, thick=2, psym=0 tvcircle, /data, state.outersky, state.centerpos[0], state.centerpos[1], $ color=5, thick=2, psym=0 endif atv_resetwindow end ;---------------------------------------------------------------------- pro atv_apphot_event, event common atv_state common atv_images widget_control, event.id, get_uvalue = uvalue case uvalue of 'centerbox': begin if (event.value EQ 0) then begin state.centerboxsize = 0 endif else begin state.centerboxsize = long(event.value) > 3 if ( (state.centerboxsize / 2 ) EQ $ round(state.centerboxsize / 2.)) then $ state.centerboxsize = state.centerboxsize + 1 endelse atv_apphot_refresh end 'radius': begin state.r = 1 > long(event.value) < state.innersky atv_apphot_refresh end 'innersky': begin state.innersky = state.r > long(event.value) < (state.outersky - 1) state.innersky = 2 > state.innersky if (state.outersky EQ state.innersky + 1) then $ state.outersky = state.outersky + 1 atv_apphot_refresh end 'outersky': begin state.outersky = long(event.value) > (state.innersky + 2) atv_apphot_refresh end 'showradplot': begin widget_control, state.showradplot_id, get_value=val case val of 'Show Radial Profile': begin ysize = 350 < (state.screen_ysize - 350) widget_control, state.radplot_widget_id, $ xsize=500, ysize=ysize widget_control, state.showradplot_id, $ set_value='Hide Radial Profile' end 'Hide Radial Profile': begin widget_control, state.radplot_widget_id, $ xsize=1, ysize=1 widget_control, state.showradplot_id, $ set_value='Show Radial Profile' end endcase atv_apphot_refresh end 'magunits': begin state.magunits = event.value atv_apphot_refresh end 'photsettings': atv_apphot_settings 'apphot_done': widget_control, event.top, /destroy else: endcase end ;---------------------------------------------------------------------- pro atv_apphot_settings ; Routine to get user input on various photometry settings common atv_state skyline = strcompress('0, button, IDLPhot Sky|Median Sky|No Sky Subtraction,'+$ 'exclusive,' + $ 'label_left=Select Sky Algorithm: , set_value = ' + $ string(state.skytype)) magline = strcompress('0, button, Counts|Magnitudes, exclusive,' + $ 'label_left = Select Output Units: , set_value =' + $ string(state.magunits)) zptline = strcompress('0, float,'+string(state.photzpt) + $ ',label_left = Magnitude Zeropoint:,' + $ 'width = 12') formdesc = [skyline, $ magline, $ zptline, $ '0, label, [Magnitude = zeropoint - 2.5 log (counts)]', $ '0, button, Apply Settings, quit', $ '0, button, Cancel, quit'] textform = cw_form(formdesc, /column, $ title = 'atv photometry settings') if (textform.tag5 EQ 1) then return ; cancelled state.skytype = textform.tag0 state.magunits = textform.tag1 state.photzpt = textform.tag2 atv_apphot_refresh end ;---------------------------------------------------------------------- pro atv_apphot ; aperture photometry front end common atv_state state.cursorpos = state.coord if (not (xregistered('atv_apphot', /noshow))) then begin apphot_base = $ widget_base(/base_align_center, $ group_leader = state.base_id, $ /column, $ title = 'atv aperture photometry', $ uvalue = 'apphot_base') apphot_top_base = widget_base(apphot_base, /row, /base_align_center) apphot_data_base1 = widget_base( $ apphot_top_base, /column, frame=0) apphot_data_base2 = widget_base( $ apphot_top_base, /column, frame=0) apphot_draw_base = widget_base( $ apphot_base, /row, /base_align_center, frame=0) apphot_data_base1a = widget_base(apphot_data_base1, /column, frame=1) tmp_string = $ string(1000, 1000, $ format = '("Cursor position: x=",i4," y=",i4)' ) state.cursorpos_id = $ widget_label(apphot_data_base1a, $ value = tmp_string, $ uvalue = 'cursorpos') state.centerbox_id = $ cw_field(apphot_data_base1a, $ /long, $ /return_events, $ title = 'Centering box size (pix):', $ uvalue = 'centerbox', $ value = state.centerboxsize, $ xsize = 5) tmp_string1 = $ string(99999.0, 99999.0, $ format = '("Object centroid: x=",f7.1," y=",f7.1)' ) state.centerpos_id = $ widget_label(apphot_data_base1a, $ value = tmp_string1, $ uvalue = 'centerpos') state.radius_id = $ cw_field(apphot_data_base1a, $ /long, $ /return_events, $ title = 'Aperture radius:', $ uvalue = 'radius', $ value = state.r, $ xsize = 5) state.innersky_id = $ cw_field(apphot_data_base1a, $ /long, $ /return_events, $ title = 'Inner sky radius:', $ uvalue = 'innersky', $ value = state.innersky, $ xsize = 5) state.outersky_id = $ cw_field(apphot_data_base1a, $ /long, $ /return_events, $ title = 'Outer sky radius:', $ uvalue = 'outersky', $ value = state.outersky, $ xsize = 5) photzoom_widget_id = widget_draw( $ apphot_data_base2, $ scr_xsize=state.photzoom_size, scr_ysize=state.photzoom_size) tmp_string4 = string(0.0, format='("FWHM (pix): ",g7.3)' ) state.fwhm_id = widget_label(apphot_data_base2, $ value=tmp_string4, $ uvalue='fwhm') tmp_string3 = string(10000000.00, $ format = '("Sky level: ",g12.6)' ) state.skyresult_id = $ widget_label(apphot_data_base2, $ value = tmp_string3, $ uvalue = 'skyresult') tmp_string2 = string(1000000000.00, $ format = '("Object counts: ",g12.6)' ) state.photresult_id = $ widget_label(apphot_data_base2, $ value = tmp_string2, $ uvalue = 'photresult', $ /frame) state.photwarning_id = $ widget_label(apphot_data_base1, $ value='-------------------------', $ /dynamic_resize, $ frame=1) photsettings_id = $ widget_button(apphot_data_base1, $ value = 'Photometry Settings...', $ uvalue = 'photsettings') state.showradplot_id = $ widget_button(apphot_data_base1, $ value = 'Show Radial Profile', $ uvalue = 'showradplot') state.radplot_widget_id = widget_draw( $ apphot_draw_base, scr_xsize=1, scr_ysize=1) apphot_done = $ widget_button(apphot_data_base2, $ value = 'Done', $ uvalue = 'apphot_done') widget_control, apphot_base, /realize widget_control, photzoom_widget_id, get_value=tmp_value state.photzoom_window_id = tmp_value widget_control, state.radplot_widget_id, get_value=tmp_value state.radplot_window_id = tmp_value xmanager, 'atv_apphot', apphot_base, /no_block atv_resetwindow endif atv_apphot_refresh end ;-------------------------------------------------------------------- ; atv main program. needs to be last in order to compile. ;--------------------------------------------------------------------- ; Main program routine for ATV. If there is no current ATV session, ; then run atv_startup to create the widgets. If ATV already exists, ; then display the new image to the current ATV window. pro atv, image, $ min = minimum, $ max = maximum, $ autoscale = autoscale, $ linear = linear, $ log = log, $ histeq = histeq, $ block = block, $ align = align, $ stretch = stretch, $ header = header common atv_state common atv_images if (long(strmid(!version.release,0,1)) LT 6) then begin print, 'This version of ATV requires IDL 6.0 or greater.' print, 'For an earlier version of ATV that is compatible with IDL < 6.0, ' print, 'go to www.physics.uci.edu/~barth/atv' retall endif if (not(keyword_set(block))) then block = 0 else block = 1 newimage = 0 if ( (n_params() EQ 0) AND (xregistered('atv', /noshow))) then begin print, 'USAGE: atv, array_name OR fitsfile' print, ' [,min = min_value] [,max=max_value] ' print, ' [,/linear] [,/log] [,/histeq] [,/block]' print, ' [,/align] [,/stretch] [,header=header]' return endif if (!d.name NE 'X' AND !d.name NE 'WIN' AND !d.name NE 'MAC') then begin print, 'Graphics device must be set to X, WIN, or MAC for ATV to work.' retall endif ; Before starting up atv, get the user's external window id. We can't ; use the atv_getwindow routine yet because we haven't run atv ; startup. A subtle issue: atv_resetwindow won't work the first time ; through because xmanager doesn't get called until the end of this ; routine. So we have to deal with the external window explicitly in ; this routine. if (not (xregistered('atv', /noshow))) then begin userwindow = !d.window atv_startup align = 0B ; align, stretch keywords make no sense if we are stretch = 0B ; just starting up. endif ; If image is a filename, read in the file if ( (n_params() NE 0) AND (size(image, /tname) EQ 'STRING')) then begin ifexists = findfile(image, count=count) if (count EQ 0) then begin print, 'ERROR: File not found!' endif else begin atv_readfits, fitsfilename=image, newimage=newimage endelse endif ; Check for existence of array if ( (n_params() NE 0) AND (size(image, /tname) NE 'STRING') AND $ (size(image, /tname) EQ 'UNDEFINED')) then begin print, 'ERROR: Data array does not exist!' endif ; If user has passed atv a data array, read it into main_image. if ( (n_params() NE 0) AND (size(image, /tname) NE 'STRING') AND $ (size(image, /tname) NE 'UNDEFINED')) then begin ; Make sure it's a 2-d array if ( (size(image))[0] NE 2) then begin print, 'ERROR: Input data must be a 2-d array!' endif else begin main_image = image newimage = 1 state.imagename = '' state.title_extras = '' atv_setheader, header endelse endif ; Define default startup image if (n_elements(main_image) LE 1) then begin gridsize = 512 centerpix = 256 ; square pattern: x = ((findgen(gridsize) # replicate(1, gridsize)) - centerpix + 0.001)*0.5 y = ((replicate(1, gridsize) # findgen(gridsize)) - centerpix + 0.001)*0.5 main_image = (sin(x)/x) * (sin(y)/y) ; round pattern: ; r = sqrt(x^2 + y^2) ; main_image = beselj(r, 1)/r ; old pattern: ; main_image = cos(((findgen(500)- 250)*2.9) # ((findgen(500)-250)*1.5)) imagename = '' newimage = 1 atv_setheader, '' endif if (newimage EQ 1) then begin ; skip this part if new image is invalid or if user selected 'cancel' ; in dialog box atv_settitle atv_getstats, align=align delvarx, display_image if n_elements(minimum) GT 0 then begin state.min_value = minimum endif if n_elements(maximum) GT 0 then begin state.max_value = maximum endif if state.min_value GE state.max_value then begin state.min_value = state.max_value - 1. endif if (keyword_set(linear)) then state.scaling = 0 if (keyword_set(log)) then state.scaling = 1 if (keyword_set(histeq)) then state.scaling = 2 ; Only perform autoscale if current stretch invalid or stretch keyword ; not set IF (state.min_value EQ state.max_value) OR $ (keyword_set(stretch) EQ 0) THEN BEGIN if (keyword_set(autoscale) OR $ ((state.default_autoscale EQ 1) AND (n_elements(minimum) EQ 0) $ AND (n_elements(maximum) EQ 0)) ) $ then atv_autoscale ENDIF atv_set_minmax IF NOT keyword_set(align) THEN BEGIN state.zoom_level = 0 state.zoom_factor = 1.0 ENDIF atv_displayall atv_resetwindow endif ; Register the widget with xmanager if it's not already registered if (not(xregistered('atv', /noshow))) then begin nb = abs(block - 1) xmanager, 'atv', state.base_id, no_block = nb, cleanup = 'atv_shutdown' wset, userwindow ; if blocking mode is set, then when the procedure reaches this ; line atv has already been terminated. If non-blocking, then ; the procedure continues below. If blocking, then the state ; structure doesn't exist any more so don't set active window. if (block EQ 0) then state.active_window_id = userwindow endif end