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How to use ROI on a DEM ? [message #47446]

Sat, 11 February 2006 10:22

L. Testut
Messages: 16
Registered: January 2006

Junior Member

Hi,
I never used ROI, I saw on this newsgroup and on the IDL documentation
many information on ROI ... but maybe to much for a first time user.
Can someone help me to find which is the good ROI routine for my
problem ?

I have a matrix H(nx,ny) which is a Digital Elevation Model of the
Antartcica. I want to select on this map the different regions of
drainage (i.e I want to select the ice divide). Is it possible to
display the map (with CONTOUR for example) and to select with the mouse
one our more closed regions on this map. The idea is to used these
regions to compute mean, stddev, ... of certain glaciological
parameters inside each region. Well I hope it was clear. Can someone
indicate me which routine I need, and how to use it in this case ?

Thanks a lot for your help,
Cheers,
Laurent

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[Message index]

		How to use ROI on a DEM ? By: L. Testut on Sat, 11 February 2006 10:22
		Re: How to use ROI on a DEM ? By: David Fanning on Sun, 12 February 2006 08:21

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