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Re: Following a ridgeline [message #60893 is a reply to message #60892]

Mon, 16 June 2008 12:37

Kenneth P. Bowman
Messages: 585
Registered: May 2000

Senior Member

In article
<9b50eb9a-33ea-40a2-8e0a-5e7e92bf52a8@x35g2000hsb.googlegroups.com>,
"mzagursk@gmail.com" <mzagursk@gmail.com> wrote:

> Hi,
>
> 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?
>
> Thanks!

You could look for the maximum curvature of the contour lines.
It might be necessary to add some non-artificial intelligence to
get the final result the way you want.

Ken Bowman

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[Message index]

		Re: Following a ridgeline By: Jelle on Wed, 18 June 2008 11:10
		Re: Following a ridgeline By: Jelle on Wed, 18 June 2008 11:02
		Re: Following a ridgeline By: Juggernaut on Wed, 18 June 2008 09:14
		Re: Following a ridgeline By: Jean H. on Wed, 18 June 2008 08:55
		Re: Following a ridgeline By: Jelle on Wed, 18 June 2008 01:52
		Re: Following a ridgeline By: Jean H. on Tue, 17 June 2008 10:14
		Re: Following a ridgeline By: RJA on Tue, 17 June 2008 02:20
		Re: Following a ridgeline By: Peter Clinch on Tue, 17 June 2008 02:01
		Re: Following a ridgeline By: Jelle on Mon, 16 June 2008 16:14
		Re: Following a ridgeline By: Kenneth P. Bowman on Mon, 16 June 2008 12:37
		Re: Following a ridgeline By: mzagursk@gmail.com on Mon, 16 June 2008 13:34
		Re: Following a ridgeline By: karo03de on Mon, 23 June 2008 00:50
		Re: Following a ridgeline By: mzagursk@gmail.com on Mon, 16 June 2008 13:15
		Re: Following a ridgeline By: David Fanning on Mon, 16 June 2008 12:49
		Re: Following a ridgeline By: Mike[2] on Tue, 24 June 2008 08:53

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