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Re: Plotting a x,y,z function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg98711] Re: Plotting a x,y,z function
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 16 Apr 2009 04:19:36 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <gs47lm$7p3$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

you have to define what you mean with r

Regards
   Jens

chem_chick wrote:
> I needed help plotting the following function:
> 
> f[x_,y_,z_] = (x^2+y^2+z^2) e^-(r^2/2)
> 
> ContourPlot3D[(x^2 + y^2 - z^2) Exp[-r^2/2], {x, -10, 10}, {y, -10,
>   10}, {z, -10, 10}]
> 
> does not work because it doesn't understand what r (radius) is....what
> is the keyword/whatever for radius?  Or do I have to define r in terms
> of x,y,z somehow?!   Help with syntax will be great!
> 
> Thanks!
> 


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