| Re: how to read/display an image like it's done in ENVI? [message #69226 is a reply to message #69225] |
Tue, 29 December 2009 06:25   |
Hassan
Messages: 48
Registered: October 2009
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Member |
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On Dec 29, 2:06 pm, David Fanning <n...@dfanning.com> wrote:
> Hassan writes:
>> do you think has something unusual happened?
>
> I don't know. The code you sent doesn't work. Could
> that be the problem?
>
> Once I got the code to work, the ENVI value at [1,1]
> corresponded exactly to the image value at [0,0].
>
> Here is the code I used.
>
> filename = 'bhdemsub.img'
> ENVI_OPEN_FILE, filename, /NO_REALIZE , R_FID=FID
> envi_file_query, fid, ns=dimX, nl=dimY, nb=nbBands,$
> DATA_TYPE=dataType, OFFSET = HeaderOffSet, $
> LOOKUP= lookup, class_names =classNames, $
> num_classes = numClasses
> map_Info = ENVI_GET_MAP_INFO(FID=FID)
> image = read_binary(filename,data_Start = HeaderOffSet,$
> data_Type=dataType, data_Dims=[dimX,dimY,nbBANDS],$
> ENDIAN= "native")
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.dfanning.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
yeah the code is fine. I did a silly mistake, I read the the data in
the wrong band I should've read [299,159,0] but I read [299,159,1]
instead.
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