hello, everyone. I have some evf files, and some of them have holes in it. I want to subset raster files in img format with these evf files. I use the ENVI open vector file , export vector file as ROI , and subset data via ROI, I can get the correct result. while I have many data to process, so I want to write IDL procedure to clip data via evf file. the result is with some problems, the holes in the evf is not masked. why this happened? what should I do. the code is below. how to process holes in evf file?? PRO ClipViaEvf,image_file, evffile, resultfile compile_opt idl2 CATCH, Error_status errorshow = 'Sorry to see the error,'+ $ ' please send the error Information to "wxfei19@gmail.com"' IF Error_status NE 0 THEN BEGIN print, !ERROR_STATE.MSG tmp = DIALOG_MESSAGE(errorshow+STRING(13b)+$ !ERROR_STATE.MSG,/error,title = 'error prompt') return ENDIF FileName = image_file envi_open_file, FileName , r_fid=fid if (fid eq -1) then begin envi_batch_exit return endif PRINT, 'fid=',fid ;get information ENVI_FILE_QUERY,fid,DIMS=dims,NS=ns,NL=nl,NB=nb, BNAMES= BNAMES out_name = resultfile ;open vector file evf_file =evffile evf_id=ENVI_EVF_OPEN(evf_file) ;get information ENVI_EVF_INFO, evf_id, num_recs=num_recs, $ data_type=data_type, projection=projection, $ layer_name=layer_name ;roi_ids = LONARR(num_recs) ;process each record FOR i=0,num_recs-1 DO BEGIN ;record = ENVI_EVF_READ_RECORD(evf_id, i) Result = ENVI_EVF_READ_RECORD(evf_id, i , PARTS_PTR=PARTS_PTR, TYPE=value) ;create ROI ;roi_id = ENVI_CREATE_ROI(color=4, ns = ns , nl = nl) print,PARTS_PTR ;0 7 -17 -25 -32 ;region count regioncount = size(PARTS_PTR,/N_element)-1 ;origin code ;xMap = dblarr(PARTS_PTR[regioncount-1]) ;yMap = dblarr(PARTS_PTR[regioncount-1]) ;new code ;point count xMap = dblarr(abs(PARTS_PTR[regioncount])) yMap = dblarr(abs(PARTS_PTR[regioncount])) roi_ids = LONARR(regioncount) ;roi_id = LONARR(1) ;old code ;for index = 1L, 1 do begin for index = 0L, regioncount-1 do begin ;origin code ;ENVI_CONVERT_FILE_COORDINATES,fid,xmaptemp,ymaptemp,Result[0,PARTS_PTR[index]:PARTS_PTR[index+1]-1],Result[1,PARTS_PTR[index]:PARTS_PTR[index+1]-1] ;ENVI_CONVERT_FILE_COORDINATES,fid,xmap,ymap,Result[0,*],Result[1,*] if ((PARTS_PTR[index] lt 0 or PARTS_PTR[index+1] lt 0 )) then begin ;continue ;new code ENVI_CONVERT_FILE_COORDINATES,fid,xmaptemp,ymaptemp,Result[0,abs(PARTS_PTR[index]):abs(PARTS_PTR[index+1])-1],Result[1,abs(PARTS_PTR[index]):abs(PARTS_PTR[index+1])-1] ;??ROI ;roi_id[index] = ENVI_CREATE_ROI(color=4, ns = ns , nl = nl) roi_ids[index] = ENVI_CREATE_ROI(color=4, ns = ns , nl = nl) ;roi_shp[ishp] = ENVI_CREATE_ROI(ns=ns,nl=nl) ;ENVI_DEFINE_ROI,roi_shp[ishp],/polygon,xpts=REFORM(xmap),ypts=REFORM(ymap) ;ENVI_CONVERT_FILE_COORDINATES,fid,xmap1,ymap1,Result[0,10:46],Result[1,10:46] ENVI_DEFINE_ROI, roi_ids[index], /polygon, xpts=REFORM(xmaptemp), ypts=REFORM(ymaptemp) ;ENVI_DELETE_ROIS, roi_ids[index];, /polygon, xpts=REFORM(xmaptemp), ypts=REFORM(ymaptemp) ;origin code ;xMap[PARTS_PTR[index]:PARTS_PTR[index+1]-1] = REFORM(xmaptemp[*]) ;yMap[PARTS_PTR[index]:PARTS_PTR[index+1]-1] = REFORM(ymaptemp[*]) ;new code xMap[abs(PARTS_PTR[index]):abs(PARTS_PTR[index+1])-1] = REFORM(xmaptemp[*]) yMap[abs(PARTS_PTR[index]):abs(PARTS_PTR[index+1])-1] = REFORM(ymaptemp[*]) ;print,xMap ;print,ymap endif else begin ;print,'test' ;new code ENVI_CONVERT_FILE_COORDINATES,fid,xmaptemp,ymaptemp,Result[0,abs(PARTS_PTR[index]):abs(PARTS_PTR[index+1])-1],Result[1,abs(PARTS_PTR[index]):abs(PARTS_PTR[index+1])-1] ;??ROI ;roi_id[index] = ENVI_CREATE_ROI(color=4, ns = ns , nl = nl) roi_ids[index] = ENVI_CREATE_ROI(color=4, ns = ns , nl = nl) ;roi_shp[ishp] = ENVI_CREATE_ROI(ns=ns,nl=nl) ;ENVI_DEFINE_ROI,roi_shp[ishp],/polygon,xpts=REFORM(xmap),ypts=REFORM(ymap) ;ENVI_CONVERT_FILE_COORDINATES,fid,xmap1,ymap1,Result[0,10:46],Result[1,10:46] ENVI_DEFINE_ROI, roi_ids[index], /polygon, xpts=REFORM(xmaptemp), ypts=REFORM(ymaptemp) ;origin code ;xMap[PARTS_PTR[index]:PARTS_PTR[index+1]-1] = REFORM(xmaptemp[*]) ;yMap[PARTS_PTR[index]:PARTS_PTR[index+1]-1] = REFORM(ymaptemp[*]) ;new code xMap[abs(PARTS_PTR[index]):abs(PARTS_PTR[index+1])-1] = REFORM(xmaptemp[*]) yMap[abs(PARTS_PTR[index]):abs(PARTS_PTR[index+1])-1] = REFORM(ymaptemp[*]) endelse ;print,abs(PARTS_PTR[index]) ;print,abs(PARTS_PTR[index+1])-1 endfor ; data = fltarr(5) ; data1 = fltarr(5) ; data2 = fltarr(17749-47) ; data3 = fltarr(17749-47) ; ; ; data = result[0,0:4] ; data1 = result[1,0:4] ; data2 = result[0,47:17749] ; data3 = result[1,47:17749] ; ; data4 = [[data],[data2]] ; data5 = [[data1],[data3]] ;??????? ;ENVI_CONVERT_FILE_COORDINATES,fid,xmap,ymap,record[0,*],record[1,*] ; ENVI_CONVERT_FILE_COORDINATES,fid,xmap4,ymap4,Result[0,47:17749],Result[1,47:17749] ; ;ENVI_CONVERT_FILE_COORDINATES,fid,xmap,ymap,data4,data5 ; ;??ROI ; ;roi_id = ENVI_CREATE_ROI(color=4, ns = ns , nl = nl) ; ENVI_DEFINE_ROI, roi_id, /polygon, xpts=REFORM(xMap4), ypts=REFORM(yMap4) ; ; ENVI_CONVERT_FILE_COORDINATES,fid,xmap1,ymap1,Result[0,10:46],Result[1,10:46] ; ENVI_DEFINE_ROI, roi_id, /polygon, xpts=REFORM(xMap1), ypts=REFORM(yMap1) ; ; ENVI_CONVERT_FILE_COORDINATES,fid,xmap2,ymap2,Result[0,5:9],Result[1,5:9] ; ENVI_DEFINE_ROI, roi_id, /polygon, xpts=REFORM(xMap2), ypts=REFORM(yMap2) ; ; ENVI_CONVERT_FILE_COORDINATES,fid,xmap3,ymap3,Result[0,0:4],Result[1,0:4] ; ENVI_DEFINE_ROI, roi_id, /polygon, xpts=REFORM(xMap3), ypts=REFORM(yMap3) ; ; xMap = dblarr(17749+1) ; xMap = dblarr(17749+1) ; xMap = [[xmap1],[xmap2],[xmap3],[xmap4]] ; yMap = [[ymap1],[ymap2],[ymap3],[ymap4]] ;roi_ids[i] = roi_id ;??XY???,??? xMapnew = where(xMap gt 0,count,COMPLEMENT=B_C, NCOMPLEMENT=count_c) yMapnew = where(yMap gt 0,count_2,COMPLEMENT=B_C_2, NCOMPLEMENT=count_c_2) IF i EQ 0 THEN BEGIN ;old code ;xmin = ROUND(MIN(xMap,max = xMax)) ;yMin = ROUND(MIN(yMap,max = yMax)) ;new code xmin = ROUND(MIN(xMap[xMapnew],max = xMax)) yMin = ROUND(MIN(yMap[yMapnew],max = yMax)) ENDIF ELSE BEGIN xmin = xMin ROUND(MAX(xMap[xMapnew])) yMin = yMin ROUND(MAX(yMap[yMapnew])) ENDELSE ENDFOR xMin = xMin >0 xmax = xMax 0 ;yMin=yMin-3 ymax = yMax < nl-1 ;ymax=ymax+5; ;????,???? roiid = where(roi_ids gt 0) ENVI_MASK_DOIT,$ AND_OR =1, $ /IN_MEMORY, $ ROI_IDS= roi_ids[roiid], $ ;ROI?ID ;ROI_IDS= roi_id, $ ;ROI?ID ns = ns, nl = nl, $ inside=0, $ ;????? r_fid = m_fid out_dims = [-1,xMin,xMax,yMin,yMax] ; print,out_dims ; ENVI_MASK_APPLY_DOIT, FID = fid, POS = INDGEN(nb), DIMS = out_dims, $ M_FID = m_fid, M_POS = [0], VALUE = 0, $ out_name = out_name, R_FID = roi_ids[roiid] ;????ID?? ENVI_FILE_MNG, id =m_fid,/remove ; ; ENVI_DOIT,'ENVI_SUBSET_VIA_ROI_DOIT',background=0,fid=fid,dims=out_dims,out_name=out_name,$ ; ns = ns, nl = nl,pos=pos,roi_ids=roi_ids ;ENDFOR END