dear all, as the subject says...i am trying to use the morph_doit in envi_batch mode. i have got images, containing pixel values of 0 and 1. now, i want to do the opening filter with a kernel of 3 and 2 cycles. my script:  pro opening_filter2 compile_opt STRICTARR   ;   ; First restore all the base save files.   ; envi, /restore_base_save_files   ;   ; Initialize ENVI and send all errors   ; and warnings to the file batch.txt   ; ENVI_INIT, /batch_mode input_path = "/inpath" output_path = "/outpath" ;envi_batch_init, log_file='batch.txt'   ;   ; Open the input file   ; ; open file image = ENVI_PICKFILE($    TITLE='Pick a image(s)',$    FILTER='inpath*.img', /MULTIPLE_FILE) num_image = n_elements(image) for f=0, num_image-1 do begin ENVI_OPEN_FILE, image[f] , r_fid=fid   if (fid eq -1) then begin     envi_batch_exit     return   endif   ;   ; Set the POS keyword to process all   ; spectral data. Output the result   ; to disk.   ; ENVI_FILE_QUERY, fid, dims=dims, nb=nb, geo_points=geo_points, nl=nl, ns=ns   pos  = lindgen(nb) out_file = FILE_BASENAME(image[f],'.img') out_name = output_path+'/'+out_file+'_open.img' kernel = fltarr(3,3)+1. value = kernel method = 2 cycles = 2 print, 'Filtering...' ENVI_DOIT, 'morph_doit', fid=fid, pos=pos, dims=dims, method=method, kernel=kernel, value=value, cycles=cycles, gray=1, out_name=out_name, r_fid=r_fid      ENVI_SETUP_HEAD, fname=out_name, ns=ns, nl=nl, nb=1, interleave=0, geo_points=geo_points, data_type=1, /WRITE   ;   ; Exit ENVI   ; endfor   envi_batch_exit end   running the script there is no error massage, but when i want to have a lock at the image, it contains only pixel values of 1 (maybe, this results of the kernel? what does the +1. mean? i got the script from the envi help). so...what is wrong...if i do the same in envi, i got different pixel values (0 and 1).  thanks a lot!!!