Re: ListPointPlot3D colors from data

*To*: mathgroup at smc.vnet.net*Subject*: [mg99379] Re: ListPointPlot3D colors from data*From*: dh <dh at metrohm.com>*Date*: Mon, 4 May 2009 06:01:24 -0400 (EDT)*References*: <gth5jp$f2c$1@smc.vnet.net>

Hi Karl, you may do this using the ColorFunction option of ListPointPlot. Towards this aim you must: 1) ensure that F receives actual and not scaled coordinates. This is done by the option: ColorFunctionScaling -> False 2) The color function "Hue" takes an argument in the range 0..1. Therefore you must scale the output of F to this range. Here is an example: ============================= F[x_, y_, z_] := RandomReal[{-1, 1}]; d = Flatten[Table[{x, y, z}, {x, 0, 3}, {y, 0, 3}, {z, 0, 3}], 2]; ListPointPlot3D[d, ColorFunctionScaling -> False, ColorFunction -> (Hue[0.5 + 0.5 F[##]] &)] ============================== Daniel karl.lefty at gmail.com wrote: > Hello all, > > I have an array of data, with four columns. Each row consists of an X, > Y, Z position, and a value for the data sample from that position F > (X,Y,Z) [where F is not a analytical function, but an experimental > sample value from that position]. What I would like is to plot the > points using something like ListPointPlot3D, with the color of the > point being determined by the value from the fourth column F(X, Y, Z). > How can I do this with Mathematica 7? >