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Re: How to find points inside a bounding polygon? [message #14817 is a reply to message #14815]

Fri, 26 March 1999 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Martin LUETHI GL A8.1 2-4092 (luthi@aura.ethz.ch) writes:

> Is there a simple and fast way to find the indices of array elements, which
> are inside of a boundary (in 2 dimensions). Let's say coord(npoints, 2) is an
> array of coordinates in the plane and bound(nbound, 2) is the array of a
> bounday polygon. The coordintes are not on a grid (otherwise one could use
> polyfillv (PV-Wave).

You might be able to modify the small program that is associated
with the following article on my web page:

http://www.dfanning.com/tips/point_in_polygon.html

Cheers,

David

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

[Note: This follow-up was e-mailed to the cited author.]

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		Re: How to find points inside a bounding polygon? By: Med Bennett on Fri, 26 March 1999 00:00
		Re: How to find points inside a bounding polygon? By: davidf on Fri, 26 March 1999 00:00

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