Re: Restriction on the domain of Plot3D

*To*: mathgroup at smc.vnet.net*Subject*: [mg55407] Re: [mg55385] Restriction on the domain of Plot3D*From*: "David Park" <djmp at earthlink.net>*Date*: Tue, 22 Mar 2005 03:50:57 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

Steeve, I replied to you once, privately, showing in detail how to do these plots and even sent you .gif image examples. But I never received a reply. Perhaps you didn't get the email? We can't include attachments to MathGroup postings, which is why I replied privately. David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Steeve Brechmann (schumi) [mailto:steevebrechmann at yahoo.ca] To: mathgroup at smc.vnet.net Hi everyone, I want to plot the following function with Plot3D : eqt[q_,N_,M_]:= - (3*q/(8*Pi))*(Sum[(Cos[4*Pi*n*d]/(2*n*d))-(Sin[4*Pi*n*d]/(8*Pi*(n*d)^2))-(Co s[4*Pi*n*d]/(32*Pi^2*(n*d)^3)),{n,1,N}] - Sum[(Cos[4*Pi*Abs[z0-m*d]]/Abs[z0-m*d])-(Sin[4*Pi*Abs[z0-m*d]]/(4*Pi*Abs[z0- m*d]^2))-(Cos[4*Pi*Abs[z0-m*d]]/(16*Pi^2*Abs[z0-m*d]^3)),{m,-M,M}]) Plot3D[Evaluate[eqt[1,10,10]],{z0,10^ - 6,3},{d,1/10,6},PlotPoints->50]; But, how can i specify to Mathematica, that i want just the plot for 2*zz0 < dd ? Thanks for the help ! Steeve Brechmann Physics Department, Laval University steevebrechmann at yahoo.ca

**Follow-Ups**:**Re: Restriction on the domain of Plot3D***From:*yehuda ben-shimol <bsyehuda@gmail.com>