Re: color in SphericalPlot3D

*To*: mathgroup at smc.vnet.net*Subject*: [mg48017] Re: color in SphericalPlot3D*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Fri, 7 May 2004 04:29:37 -0400 (EDT)*Organization*: Universitaet Leipzig*References*: <c778ms$hf7$1@smc.vnet.net> <200405041103.HAA02766@smc.vnet.net> <c7am2k$hdv$1@smc.vnet.net>*Reply-to*: kuska at informatik.uni-leipzig.de*Sender*: owner-wri-mathgroup at wolfram.com

Hi, Needs["Graphics`ParametricPlot3D`"]; SphericalPlot3D[ {Abs[SphericalHarmonicY[2, -2, t, f]], SurfaceColor[Hue[Arg[SphericalHarmonicY[2, -2, t, f]/(2Pi) + 0.1]]]}, {t, 0, \[Pi]}, {f, 0, 2\[Pi]}, PlotPoints -> {16, 64}] Regards Jens Maurits Haverkort wrote: > > Dear All > > I have a complex function R(t_,f_) of wich I would like to plot > R*Conjugate[R] in 3D. So far no problem, SphericalPlot3D does this for me. > But I want to conserve phase information, wich I want to put in the color. > (positive red, negative blue, complex purple). For Real functions R(t_,f_) I > made the folowing notebook that does not work. It should plot first the > function for R>0 in red and then the part for R<0 in blue. After combining > the two plots with show everything is blue. Has this problem been solved > before? Does anybody know how to asign a color to the surface of a Spherical > 3D plot? > > Needs["Graphics`ParametricPlot3D`"]; > > R = FullSimplify[SphericalHarmonicY[2, 2, t, f] + SphericalHarmonicY[2, -2, > t, f]]; > plotpos = SphericalPlot3D[If[R >= 0, R Conjugate[R], 0], {t, 0, \[Pi]}, {f, > 0, 2\[Pi]}, LightSources -> {{{1, 1, 1}, RGBColor[1, 0, 0]}}]; > plotneg = SphericalPlot3D[If[R <= 0, R Conjugate[R], 0], {t, 0, \[Pi]}, {f, > 0, 2\[Pi]}, LightSources -> {{{1, 1, 1}, RGBColor[0, 0, 1]}}]; > Show[plotneg, plotpos] > > Thanks, > Maurits Haverkort

**References**:**Re: Do Modules Produce Side Effects?***From:*Peter Hahn <pg.hahn@arcor.de>