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Re: ENVI's codes [message #68868 is a reply to message #68721]

Sun, 22 November 2009 16:27

jeffnettles4870
Messages: 111
Registered: October 2006

Senior Member

On Nov 22, 4:35 pm, Hassan <hkhav...@gmail.com> wrote:
> I used the following code to display the image:
> image=read_tiff(file)
> imagesize=[62,488,290]
> DEVICE, DECOMPOSED = 0
> LOADCT, 38
> WINDOW, 0, XSIZE = imageSize[1], YSIZE = imageSize[2]
> TV, Image(0,*,*), 0
>
> but there are two problems: first it's displayed upside-down and
> second the way it shows the image is quite different with other
> softwares like ENVI, it's more like the image is shown in 256-color
> table or something like that.

The upside-down part I can help you with at least. With ENVI the
pixel origin is in the upper left corner of the image. With IDL the
origin is the lower left corner. So add a reverse and you should be
ok:

image = reverse(image,2)

put that aright after you call read_tiff.

As for how its displaying, i'm not sure i understand your description
of the problem, so i'll leave that to smarter folks than me :)

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[Message index]

		Re: ENVI's codes By: Jiek on Sun, 22 November 2009 16:18
		Re: ENVI's codes By: Hassan on Sun, 22 November 2009 13:35
		Re: ENVI's codes By: Hassan on Sun, 22 November 2009 10:41
		Re: ENVI's codes By: rogass on Sat, 21 November 2009 15:26
		Re: ENVI's codes By: Michael Galloy on Sat, 21 November 2009 15:23
		Re: ENVI's codes By: jeanh on Mon, 23 November 2009 07:20
		Re: ENVI's codes By: Carsten Lechte on Mon, 23 November 2009 03:27
		Re: ENVI's codes By: jeffnettles4870 on Sun, 22 November 2009 16:27
		Re: ENVI's codes By: Hassan on Wed, 25 November 2009 03:55
		Re: ENVI's codes By: Hassan on Mon, 23 November 2009 05:20

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