| Re: Following a ridgeline [message #60896 is a reply to message #60893] |
Mon, 16 June 2008 12:49   |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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mzagursk@gmail.com writes:
> I've got a 2d map (let's say it's a contour map of a mountain). I
> need to be able to 'detect' and 'follow' the ridgeline across the
> whole mountain (which does about a 180 degree turn as well, it's U
> shaped). Anyone know any way to accomplish this?
>
> So far, i've attempted to start at the maximum point, and then look
> for surrounding points that minimizes the downward slope, this
> process, however, creates switchbacks at peaks and doesnt follow the
> peak down along a ridge. Any ideas?
The obvious idea is the WATERSHED function. Have you
tried that?
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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