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ENVI and ROIs [message #42029] Mon, 13 December 2004 13:51 Go to next message
fleduc is currently offline  fleduc
Messages: 7
Registered: December 2004
Junior Member
Hello,

For example, considering 3 classes and drawing five polygons by class,
we obtain 15 polygons...

The ENVI ROI tool allows to compute statistics for the 3 classes.

But how to compute statistics for each of the 15 polygons ?

Thanks,

Francois.

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Re: ENVI and ROIs [message #42098 is a reply to message #42029] Tue, 14 December 2004 05:45 Go to previous message
Francois L. is currently offline  Francois L.
Messages: 19
Registered: December 2004
Junior Member
As a complement to the previous question.
Concerning the IDL xroi tool, how can I draw several polygons for a
same class ?
For example, polygons 1-3 correspond to class 1, polygons 4-7 correspnd
to class 2, etc.

I managed to do it by calling xroi function n times for n classes. This
implies that the xroi tool is also closed n times, which is not nice.
Thanks

François.

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