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Re: Mathematica 6.0 Desperation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg83685] Re: Mathematica 6.0 Desperation
  • From: dh <dh at metrohm.ch>
  • Date: Wed, 28 Nov 2007 05:34:46 -0500 (EST)
  • References: <figtq9$fa7$1@smc.vnet.net>


Hi Jesus,

if I change PlotPoints->500 to PlotPoints->50 I get a plot in reasonable 

time.

hope this helps, Daniel



Jesus M. Goiri wrote:

>  Dear Sirs

> 

>  I have tried some items that seem to hang Mathematica 6.0. However  

>  they work perfectly fine in the 5.2 version. I have tried to  

>  discover the flaw and I have not been able to do so. The problem  

>  pertains at some code I extracted from a book about Mathematica  

>  applications by Boccara, particularly the examples that relate to  

>  fractals, Julia and Mandelbrot Sets.

> 

>  I have below the lines of code. I you try them, I'd wish to see if  

>  you are able to make them work.

> 

>  Yours sincerely,

> 

>  Jesus M, Goiri

> 

>  Clear[JuliaTest]

>  JuliaTest = Compile[{x, y, {n, _Integer}, {c, _Complex}},

>    Module[{z, num = 0}, z = x + y I;

>      While[Abs[z] < 2.0 && num < n, z = z^2 + c; num++]; num]]

>  DensityPlot[JuliaTest[x, y, 50, -0.75 + 0.5 I],

>  {x, 1.24, 1.27}, {y, -0.13, -0.1}, PlotPoints -> 500,

>  Mesh -> False, ColorFunction -> Hue]

> 

> 




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