Re: ContourShading with ListContourPlot
- To: mathgroup at smc.vnet.net
- Subject: [mg19387] Re: ContourShading with ListContourPlot
- From: "Allan Hayes" <hay at haystack.demon.co.uk>
- Date: Mon, 23 Aug 1999 13:57:07 -0400
- References: <7pl6qn$cfs@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Laurence Lours <lours at bruyeres.cea.fr> wrote in message news:7pl6qn$cfs at smc.vnet.net... > > > Hello mathgroup, > > I want to do contour plots of a list of (x,y,z) points. I found ListContourPlot from ExtendGraphics`Contour` package, but I would like to have a colored graph. > ContourShading->True does not work. Has anyone an idea? > > Thanks > Laurence Lours > lours at bruyeres.cea.fr > Laurence, You need to use the option ColorFunction. For example, with the built in ListContourPlot ListContourPlot[Table[x^2 + y^2, {x, -2, 2, .1}, {y, -2, 2, .1}], ColorFunction -> (Hue[2/3#] &), MeshRange -> {{-2, 2}, {-2, 2}}] In Verrsion 3.x the inputs to the color function were scaled to make so that the minof the z-plot range became 0 and the max of the z-plot range became 1. With Version 4.0 we can use the option ColorFunctionScaling ->False to stop this scaling. This makes setting the colors easier. Allan --------------------- Allan Hayes Mathematica Training and Consulting Leicester UK www.haystack.demon.co.uk hay at haystack.demon.co.uk Voice: +44 (0)116 271 4198 Fax: +44 (0)870 164 0565