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Re: contour fill [message #21448 is a reply to message #21378]

Sat, 26 August 2000 00:00

wmc
Messages: 117
Registered: February 1995

Senior Member

Stephen O'Sullivan <so@amsta.leeds.ac.uk> wrote:
> On Fri, 25 Aug 2000, David Fanning wrote:
>> Stephen O'Sullivan (so@amsta.leeds.ac.uk) writes:
>>> I am trying to get IDL to isolate the values contained within a closed
>>> contour of a plotted data array. Basically, I want to perform a
>>> calculation using these values instead of cloouring them in like /fill
>>> does.

> Thanks for your help but the problem that I didn't really make clear is
> that I need all the values contained within the specified closed contour,
> not just those above or below the contour value. In this sense it's a
> geometric thing.

Well.. wen you say *all* the values, you presumably mean te pixels at
a certain resolution, rather tan te infinite number of real points?

If so: wy not contour onto a pixmap, ten read in te pixmap (tvrd) ten

points_i_like=where(pixmap eq cosen_colour)

-W. (posting from a keyboard with a bad "h", you may have noticed...)

--
William M Connolley | wmc@bas.ac.uk | http://www.nerc-bas.ac.uk/icd/wmc/
Climate Modeller, British Antarctic Survey | Disclaimer: I speak for myself

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[Message index]

		contour fill By: so on Fri, 25 August 2000 00:00
		Re: contour fill By: davidf on Sat, 26 August 2000 00:00
		Re: contour fill By: Craig Markwardt on Sat, 26 August 2000 00:00
		Re: contour fill By: Craig Markwardt on Sat, 26 August 2000 00:00
		Re: contour fill By: wmc on Sat, 26 August 2000 00:00
		Re: contour fill By: davidf on Fri, 25 August 2000 00:00
		Re: contour fill By: Craig Markwardt on Fri, 25 August 2000 00:00
		Re: contour fill By: davidf on Fri, 25 August 2000 00:00
		Re: contour fill By: so on Fri, 25 August 2000 00:00
		Re: contour fill By: davidf on Fri, 25 August 2000 00:00
		Re: contour fill By: so on Fri, 25 August 2000 00:00
		Re: contour fill By: so on Thu, 31 August 2000 03:46

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