Re: SphericalPlot3D ColorFunction problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg104720] Re: SphericalPlot3D ColorFunction problem*From*: Peter Breitfeld <phbrf at t-online.de>*Date*: Sat, 7 Nov 2009 07:02:02 -0500 (EST)*References*: <hd0spr$7jb$1@smc.vnet.net>

Porscha Louise McRobbie wrote: > Hello, > > Can anyone explain why the following simple plot is a single color? > > SphericalPlot3D[Abs[Cos[t]], {t, 0, Pi}, {p, -Pi, Pi}, > ColorFunction -> Function[{t}, Hue[Arg[Cos[t]]/(2. Pi)]], > ColorFunctionScaling -> False] > > Arg[Cos[t]]/(2. Pi)] should be zero for t<Pi/2, and 0.5 for t>Pi/2, so > I expect the the upper lobe of the plot to be red (Hue[0]) and the > lower lobe to be cyan (Hue[0.5]). Is there something different about > ColorFunctions in SphericalPlot3D compared with Plot3D? > > Any help is greatly appreciated! > > Porscha > If you look at the options section of Spherical Plot, you will see, that in the general case ColorFunction has to be a function of 6 variables like Function[{x,y,z,z,theta,phi,r}, stuff] -- _________________________________________________________________ Peter Breitfeld, Bad Saulgau, Germany -- http://www.pBreitfeld.de