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Re: work only with Performance->Speed

  • To: mathgroup at smc.vnet.net
  • Subject: [mg102774] Re: [mg102764] work only with Performance->Speed
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Thu, 27 Aug 2009 06:32:08 -0400 (EDT)
  • References: <200908261145.HAA11540@smc.vnet.net>
  • Reply-to: drmajorbob at yahoo.com

You have an extra comma (syntax error!), but this fails, too:

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 -> "Quality"]

"Speed" works, but "Quality" does not. It looks like a bug to me.

Bobby

On Wed, 26 Aug 2009 06:45:01 -0500, wiso <gtu2003 at alice.it> wrote:

> 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)
>
>



-- 
DrMajorBob at yahoo.com


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