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Re: Apply a shapefile to raster images in IDL [message #41271 is a reply to message #41260]

Mon, 04 October 2004 04:21

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Jenny writes:

> I'm a novice in IDL, not sure if my questions are totally improper. I
> want to use an Arcview format shapefile as a mask, to a huge number of
> raster images, which are in a polar stereographic grid format with
> separate image data files and lat/lon files. I would really appreciate
> if you could give me any hint about the following questions:
>
> 1. How to read the shapefile into an IDL variable?
> 2. How to tailor the shapefile to my raster image grid?
> 3. If the above questions are not proper or impossible in IDL, would
> you give me some suggestions to do the work?

It's not that it is impossible to do 1 and 2 in IDL, it
certainly is possible. The problem is that it is impossible
to tell a novice IDL user how to do it. :-(

Here is a suggestion. Go to the RSI User Contribution site
and search on "shapefile". There is a shapefile viewer there
written my Jim Pendleton. I'd study that code a bit, and see if
it doesn't at least go a little ways towards answering some
of your questions.

We need a good shapefile example somewhere. Does anyone
have anything I could clean up a bit and make available
on my web page?

Cheers,

David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http:/www.dfanning.com/
Phone: 970-221-0438, IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: Apply a shapefile to raster images in IDL By: envi35 on Mon, 04 October 2004 15:38
		Re: Apply a shapefile to raster images in IDL By: Kelly Dean on Mon, 04 October 2004 13:17
		Re: Apply a shapefile to raster images in IDL By: David Fanning on Mon, 04 October 2004 04:21
		Re: Apply a shapefile to raster images in IDL By: Puneeth Shankar on Mon, 21 March 2016 00:37
		Re: Apply a shapefile to raster images in IDL By: envi35 on Tue, 05 October 2004 18:49

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