function eitoversxt, eitfits, sxtfits, cmdgrid=cmdgrid, fitlimb=fitlimb, $ gcolor=gcolor, ccolor=ccolor, inverse=inverse ;+ ; Name: eitoversxt ; ; Purpose: draw EIT contours on SXT image; optionally overlay EIT 32x32 grid ; ; Calling Sequence: ; ; History: proto-version, 23-jan-1996 ; ; Restrictions: ; only full sun EIT and SXT , simple FITS for now ; TODO - rotate SXT image to input time ;- if not data_chk(eitfits,/string) or not data_chk(sxtfits,/string) then $ message,"Must supply EIT and SXT FITs file names if not file_exist(eitfits) then message,"can't find: " + eitfits if not file_exist(sxtfits) then message,"can't find: " + sxtfits sxtimg=readfits(sxtfits,shead) eitimg=readfits(eitfits,ehead) ;---- todo - fits header summary - extract time, size, pointing info --- stime=fmt_tim(fxpar(shead,'date-obs') + ' ' + fxpar(shead,'time-obs')) etime=fmt_tim(fxpar(ehead,'date-obs') + ' ' + fxpar(ehead,'time-obs')) ; assume SXT sun-center in FITS file (otherwise, call sxt_cen) spoint=[fxpar(shead,'crpix1'),fxpar(shead,'crpix2'),fxpar(shead,'crota')] ssize =[fxpar(shead,'naxis1'),fxpar(shead,'naxis2')] spoint=spoint * (1024./ssize(0)) esize =[fxpar(ehead,'naxis1'),fxpar(ehead,'naxis2')] ;*********** ; kludges for full EIT only if esize(0) ne 1024 or esize(1) ne 1024 then begin message,/info,"Sorry - only full frame EIT images for now... return,eitimg endif sxtimg=congrid(sxtimg,1024,1024) ; zoom to EIT ssize=ssize*2 ;*********** ; -------------------------------------------------------------------- ; get EIT (SOHO) pointing info ; att_info=get_sc_att(etime) ; temporary - use fit_limb for EIT limb determination pb0r,gt_day(etime),r=rad ; solar radius (arcsec) ; ** assuming full res = 1024x1024 ;fit_limb, eitimg, ex, ey, er,init=[esize(0)/2,esize(1)/2 + 65,rad], $ ; pixel=2.6,kill=4 message,/info,"Locating UV limb... (please be patient) find_limb,eitimg, ex, ey, er ; embed grid on request if keyword_set(cmdgrid) then begin gsize=32 ; 32x32 row blocks eitimg(lindgen(esize(0)/gsize)*gsize,*)=max(eitimg) eitimg(*,lindgen(esize(0)/gsize)*gsize)=max(eitimg) endif inverse=keyword_set(inverse) if inverse then begin iimg=coal_image(sxtimg,[ex, ey, er],spoint,ssize) ; shift SXt overimg=congrid(eitimg,ssize(0),ssize(1)) endif else begin overimg=coal_image(eitimg,spoint,[ex, ey, er],esize) ; shift EIT iimg=congrid(sxtimg,esize(0),esize(1)) endelse ; -------- optional - do overlay and return overlayed image ---------- temp=!d.name wdef,xx,(size(overimg))(1),(size(overimg))(2),/zbuffer set_plot,'z' tvscl,iimg ocontour,overimg overimg=tvrd() set_plot,temp ; ------------------------------------------------------------------ return, overimg end
Last revised: - Wed May 9 21:45:13 2007- F. Auchère
