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Re: Iso-contours at maximum/minimum levels [message #64875 is a reply to message #64874]

Fri, 30 January 2009 07:21

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Jeremy Bailin writes:

> Paolo's suggestion makes perfect sense... but then I tried it and I'm
> befuddled. The minimum contour consists of just a few dots!

Exactly, because of round-off errors, etc., there is nothing
there, really, to "contour". I think the person who asked
the question wants an imprint of the minimum value of the
surface (within some epsilon, obviously). And I continue
to insist this is *not* the same as a "contour".

> There's something funny about how it's drawing the contour that gets
> very confused by the abrupt change right at the minimum.

I don't think it is confused. I think it is doing exactly
what the programmer designed it to do. I think it is our
thinking about the problem that is confused. :-)

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]

		Re: Iso-contours at maximum/minimum levels By: pgrigis on Fri, 30 January 2009 11:00
		Re: Iso-contours at maximum/minimum levels By: David Fanning on Fri, 30 January 2009 07:48
		Re: Iso-contours at maximum/minimum levels By: pgrigis on Fri, 30 January 2009 07:36
		Re: Iso-contours at maximum/minimum levels By: David Fanning on Fri, 30 January 2009 07:21
		Re: Iso-contours at maximum/minimum levels By: Jeremy Bailin on Fri, 30 January 2009 07:04
		Re: Iso-contours at maximum/minimum levels By: pgrigis on Thu, 29 January 2009 15:14
		Re: Iso-contours at maximum/minimum levels By: David Fanning on Thu, 29 January 2009 14:51
		Re: Iso-contours at maximum/minimum levels By: David Fanning on Thu, 29 January 2009 08:15
		Re: Iso-contours at maximum/minimum levels By: Gianluca Li Causi on Mon, 02 February 2009 04:14

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