Re: ListDensityPlot, ColorFunction, and associated confusions
- To: mathgroup at smc.vnet.net
- Subject: [mg49755] Re: [mg49737] ListDensityPlot, ColorFunction, and associated confusions
- From: Selwyn Hollis <sh2.7183 at misspelled.erthlink.net>
- Date: Fri, 30 Jul 2004 06:02:08 -0400 (EDT)
- References: <200407291145.HAA10369@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
On Jul 29, 2004, at 7:45 AM, AES/newspost wrote: > I'm trying to show some rectangular arrays in two ways by creating > side-by-side ListPlot3D and ListDensityPlot displays in a > GraphicsArray. > > Each of the arrays contains a primary "mountain peak" that arises out > of > a flat plane at a base elevation close to zero, plus several secondary > hillocks only 1/3 to 1/2 as high as the main peak -- and that's how > they > show up in the ListPlot3D, > > In the ListDensityPlot, however, using the standard ColorFunction->Hue, > the tops of some of the secondary hillocks show up in the same bright > red as the top of the main peak, even though they appear in the > ListPlot3D to be less than 1/2 as high as the main peak. It's as if > ColorFunctionScaling is being applied locally to each individual peak > somehow. > > What might be going on here? (And secondarily, because of the way Hue > functions, the flat background plain ends up in close to the same red > as > the top of the peaks. Any easy way to fix that?) > Have you tried something like ColorFunction->(Hue[#^2]&) or ColorFunction->(Hue[#^(1/2)]&) ? ----- Selwyn Hollis http://www.appliedsymbols.com (edit reply-to to reply)
- References:
- ListDensityPlot, ColorFunction, and associated confusions
- From: AES/newspost <siegman@stanford.edu>
- ListDensityPlot, ColorFunction, and associated confusions