colormap ramp not linear?

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#13

From: William Hsu
Date: Tue, 03 Nov 1992 17:01

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In extracting information from the generate colormap module I noticed
that the ramp isn't linear at least for the opacity values. Though 
the ramp in the widget display looks linear, the values returned aren't.
Then when you make a map of your own using the "do interpolation" function,
though the values are linear, the curve in the colormap widget is not.
Can someone explain to me the reasoning behind the representation, and why
selecting ramp does not give you linear values when the help text says it does?

-- 
Thanks,
William

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Path: arc1-ca.pugleaf.net!sparky!uunet!ferkel.ucsb.edu!taco!gatech!swrinde!zaphod.mps.ohio-state.edu!cs.utexas.edu!sun-barr!decwrl!pa.dec.com!rdg.dec.com!news.crl.dec.com!hsu
From: hsu@crl.dec.com (William Hsu)
Subject: colormap ramp not linear?
Message-ID: <1992Nov3.170109.1295@crl.dec.com>
Sender: news@crl.dec.com (USENET News System)
Organization: DEC Cambridge Research Lab
Date: Tue, 3 Nov 1992 17:01:09 GMT
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