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Re: problem with TRIANGULATION option in CONTOUR [message #73136 is a reply to message #73053]

Mon, 25 October 2010 17:54

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Ben Tupper writes:

> When I load the data you have posted and generate the triangulation I
> get a different number of triangles than you. You can see this in the
> output of help - note that tri2 has 19160 vertices. Also, you clip the
> maximum Z value when you use TRIGRID but you don't specify it for
> CONTOUR. I don't know if these are important issues, but perhaps you
> are unwittingly comparing apples to oranges?

Yes, now that I look at my code again, I didn't recompute
the triangles, just used the ones provided. When I did
the triangulation independently, I got the same number
of triangles Ben got.

I noticed right away the discrepancy between the two
images provided. And I wonder if the first figure (the
one that used the TV command) and for which the triangles were
presumably provided was actually created with a different data set
than the second figure, which was created with the contour command.

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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[Message index]

		problem with TRIANGULATION option in CONTOUR By: Ardhuin on Sat, 23 October 2010 05:35
		Re: problem with TRIANGULATION option in CONTOUR By: David Fanning on Tue, 26 October 2010 06:52
		Re: problem with TRIANGULATION option in CONTOUR By: Ardhuin on Tue, 26 October 2010 06:34
		Re: problem with TRIANGULATION option in CONTOUR By: David Fanning on Tue, 26 October 2010 05:18
		Re: problem with TRIANGULATION option in CONTOUR By: ben.bighair on Tue, 26 October 2010 04:31
		Re: problem with TRIANGULATION option in CONTOUR By: Ardhuin on Mon, 25 October 2010 23:04
		Re: problem with TRIANGULATION option in CONTOUR By: David Fanning on Mon, 25 October 2010 17:54
		Re: problem with TRIANGULATION option in CONTOUR By: ben.bighair on Mon, 25 October 2010 17:29
		Re: problem with TRIANGULATION option in CONTOUR By: David Fanning on Mon, 25 October 2010 15:17

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