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Re: [IDL/ENVI] Extracting points from *.roi files [message #12571 is a reply to message #12485]

Mon, 17 August 1998 00:00

Helge.Rebhan
Messages: 12
Registered: October 1997

Junior Member

In article <6r0eng$tqu@silver.sdsmt.edu>, wcapehar@silver.sdsmt.edu
(William Capehart) wrote:

> Is there an easy way in envi or other method in which to extract the
pixel/array
> points for a given array from a region of interest (roi) file? The
units are in
> pixels (and the image in question is ungeoreferenced) so there are no
map projection
> issues. Common sense tells me it should be straight forward.
>
> Ideas?

The ENVI Statistics function takes a ROI as valid input area , so this is
one way to
get average pixel information.
If you want a rectangular subwindow just use the 'select bands and area' widget
available for nearly all ENVI processing routines.

Hope this helps, Servus, Helge

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		[IDL/ENVI] Extracting points from *.roi files By: wcapehar on Thu, 13 August 1998 00:00
		Re: [IDL/ENVI] Extracting points from *.roi files By: Helge.Rebhan on Mon, 17 August 1998 00:00

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