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Re: routine in ENVI to pass from EVF to ROI???? [message #49636 is a reply to message #49571]

Fri, 04 August 2006 02:37

txominhermos
Messages: 25
Registered: October 2005

Junior Member

> If you just want a rectangle area that includes all the ROIs, why not
> just read the coordinates of vertexes and get the maximum and minumum
> values?

YES, I want a rectangle, but I just can get the pixel addresses (
roi_addresses = ENVI_GET_ROI(roi_id)), and I cannot use

image(roi_addresses)= 1

and then extract the array_indices, to get the coordinates, because I
am working with 40000X35000 pixels images, so the computer does not
have enought memory.

Do u know how to get the coordinates and then do the subset using just
the envi routines as ENVI_WRITE_ENVI_FILE or to an external file (like
tiff) ???

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[Message index]

		routine in ENVI to pass from EVF to ROI???? By: txominhermos on Thu, 03 August 2006 00:20
		Re: routine in ENVI to pass from EVF to ROI???? By: David Streutker on Mon, 07 August 2006 08:43
		Re: routine in ENVI to pass from EVF to ROI???? By: txominhermos on Tue, 08 August 2006 01:56
		Re: routine in ENVI to pass from EVF to ROI???? By: txominhermos on Sun, 06 August 2006 23:45
		Re: routine in ENVI to pass from EVF to ROI???? By: David Streutker on Fri, 04 August 2006 08:50
		Re: routine in ENVI to pass from EVF to ROI???? By: txominhermos on Fri, 04 August 2006 02:37
		Re: routine in ENVI to pass from EVF to ROI???? By: txominhermos on Tue, 08 August 2006 02:15

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