| Re: how to read/display an image like it's done in ENVI? [message #69234 is a reply to message #69233] |
Mon, 28 December 2009 17:10  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Hassan writes:
> I have an multi-band image [488,290,62] and opened it in ENVI. I need
> to work with a particular pixel for example pixel with column 300 and
> row 160 in band 1. after importing the image in IDL, i couldnt find
> the pixel.
> print, image[300,160,0] >>> it shows me a pixel value that is
> different with the one is shown in ENVI
> I flipped the image (using reverse function) and consider it starts
> with column=0 and row=0 in IDL but still couldnt find the pixel.
> image=reverse[image,2]
> print, image[299,159]
>
> I'm not sure if I describe the problem clearly so please let me know
> if you need more explanation.
ENVI uses an indexing system that starts at [1,1],
rather than the [0,0] of IDL. Could that be the
problem?
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.")
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