Re: couple of questions about ListPlot3D

*To*: mathgroup at smc.vnet.net*Subject*: [mg99628] Re: couple of questions about ListPlot3D*From*: Szabolcs Horvát <szhorvat at gmail.com>*Date*: Sat, 9 May 2009 03:31:56 -0400 (EDT)*References*: <gu305a$olh$1@smc.vnet.net>

Luc Barthelet wrote: > I am using ListPlot3D to build elevation maps with different terrain > types based on elevation. (to be used in with Google maps). > > > > Question #1: is there an option to prevent blending of MeshShading > colors? Yes, there is: http://reference.wolfram.com/mathematica/ref/NormalsFunction.html Plot3D[x^2 + y^2, {x, -1, 1}, {y, -1, 1}, NormalsFunction -> None, Mesh -> None, PlotPoints -> 5] But this option affects the way 3D graphics are *rendered*, not their *structure*. I assume you are going to export the 3D structure to get the surface into Google Earth. > > To that extend I am using the directive MeshShading->myMapColors which > works really well. > > > > This is working well in general, but in one case I need to prevent the > Antialisaing that is occuring between layers. > > I need my final result to only include the colors in the list > myMapColors and no mixing of those colors. > > > > Of course I have Lighting->{"Ambient",White} . > Though I am not sure that this is what you were asking for. In this example I don't see the colours being blended: ListPlot3D[Table[x^2 + y^2, {x, -1, 1, .25}, {y, -1, 1, .25}], MeshShading -> {{Yellow, Orange}, {Pink, Red}}]