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MathGroup Archive 2007

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Re: Memmory issue while batch exporting graphics

  • To: mathgroup at smc.vnet.net
  • Subject: [mg79772] Re: Memmory issue while batch exporting graphics
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Sat, 4 Aug 2007 05:50:09 -0400 (EDT)
  • References: <f8v12b$d5j$1@smc.vnet.net>

Hi,

make a Graphics[Raster[]] object in the same way as Mathematica
represent bitmaps. The DensityPlot[] is for smooth functions
and not for bitmaps or discontinuous height fields.

It had worked for me up to 4096^2 color maps

Regards
   Jens

Ned Kelly wrote:
> Hi all
> 
> I'm (just for fun) trying to generate a high resolution Mandelbrot set 
> image with Mathematica. In order to do so I wrote a Programm to build 
> an array wich holds the number of iterations in each spesific point.
> Unfortunately I get a memmory error when the array gets larger than 500x500.
> 
> No more memory available.
> Mathematica kernel has shut down.
> Try quitting other applications and then retry.
> 
> Then I decided to do the same in small portions. I generate a 
> ListDensityPlot (500x500 pix), save it as a variable and export it to a 
> spesivic folder. This repeats itself as I packed it in two "For" loops. 
> This works fine up to a spesivic point where (again) my memmory overflows.
> 
> My idea was to stick all these exported parts of the Mandelbrot together 
> to get a high resolution Mandelbrot set.
> 
> 
> Do you've got any idea how to work around that Memmory issue? I Tried to 
>   clear the systemcache and clear the variables holding the picture and 
> the array but nothing helped.
> 
> Appreciate your help!
> 
> Ned
> 


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