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Re: Already written function to find if a point is within a rectangle? [message #79345 is a reply to message #79344]

Mon, 20 February 2012 14:09

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Jacare Omoplata writes:

> So I need a way to find out if a point ( position of a star ) is
> within a rectangle ( image boundary ). The rectangle edges are not
> strictly horizontal or vertical.
>
> I've found several methods of doing this, and can write a function.
> But I can save some time if someone knows if there's already one
> available out there.

This "point inside polygon" code might be helpful:

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

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Already written function to find if a point is within a rectangle? By: Craig Markwardt on Mon, 20 February 2012 19:22
		Re: Already written function to find if a point is within a rectangle? By: Jacare Omoplata on Mon, 20 February 2012 15:47
		Re: Already written function to find if a point is within a rectangle? By: Jacare Omoplata on Mon, 20 February 2012 15:37
		Re: Already written function to find if a point is within a rectangle? By: penteado on Mon, 20 February 2012 14:56
		Re: Already written function to find if a point is within a rectangle? By: David Fanning on Mon, 20 February 2012 14:09
		Re: Already written function to find if a point is within a rectangle? By: Jacare Omoplata on Wed, 22 February 2012 19:25

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