rescale gray levels with ListDensityPlot
- To: mathgroup at smc.vnet.net
- Subject: [mg74431] rescale gray levels with ListDensityPlot
- From: Benoit Scheid <bscheid at seas.harvard.edu>
- Date: Wed, 21 Mar 2007 02:48:32 -0500 (EST)
- Organization: Harvard University
Hi, I have a two-dimensional list of data with positive and negative values. I'm using ListDensityPlot and ListCoutourPlot. By defaullt, the range of gray levels codes the range of z-values from -z_min (black) to z_max (white). I would like to have the zero gray level (black) for z=0 and the maximum gray level (white) for z=|zmax|. At the same time, I would like to use two different colors to discriminate between positive and negative values. Is that possible? Thanks, Ben