Re: work only with Performance->Speed

*To*: mathgroup at smc.vnet.net*Subject*: [mg102817] Re: work only with Performance->Speed*From*: wiso <gtu2003 at alice.it>*Date*: Fri, 28 Aug 2009 00:45:06 -0400 (EDT)*References*: <200908261145.HAA11540@smc.vnet.net> <h75na8$p25$1@smc.vnet.net>

DrMajorBob wrote: > 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) >> >> > > > Yes, it's a bug, and this is the actual solution from wolfram support: ContourPlot3D[ zz (-1 + 1/(xx^2 + y^2 + zz^2)^(3/2)), {xx, -2, 2}, {y, -2, 2}, {zz, -4, 4}, BoundaryStyle -> Red, RegionFunction -> Function[{x, y, z}, x^2 + y^2 + z^2 >= 1], PerformanceGoal -> "Quality", MaxRecursion->1, PlotPoints->10]

**References**:**work only with Performance->Speed***From:*wiso <gtu2003@alice.it>