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work only with Performance->Speed

• To: mathgroup at smc.vnet.net
• Subject: [mg102764] work only with Performance->Speed
• From: wiso <gtu2003 at alice.it>
• Date: Wed, 26 Aug 2009 07:45:01 -0400 (EDT)

This works:

ContourPlot3D[
 zz (-1 + 1/(xx^2 + yy^2 + zz^2)^(3/2)), {xx, -2, 2}, {yy, -2, 
  2}, {zz, -4, 4},
 BoundaryStyle -> Red,
 RegionFunction -> Function[{x, y, z}, x^2 + y^2 + z^2 >= 1],
 PerformanceGoal -> "Speed"
 ]

This not:

ContourPlot3D[
 zz (-1 + 1/(xx^2 + yy^2 + zz^2)^(3/2)), {xx, -2, 2}, {yy, -2, 
  2}, {zz, -4, 4},
 BoundaryStyle -> Red,
 RegionFunction -> Function[{x, y, z}, x^2 + y^2 + z^2 >= 1],
 ]

really I don't understand... (Mathematica 7)

• Follow-Ups:
  • Re: work only with Performance->Speed
    • From: DrMajorBob <btreat1@austin.rr.com>