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Re: Speeding Up Realtime Visualization

  • To: mathgroup at smc.vnet.net
  • Subject: [mg84228] Re: Speeding Up Realtime Visualization
  • From: lamoucheg at gmail.com
  • Date: Fri, 14 Dec 2007 14:57:11 -0500 (EST)
  • References: <fjtghn$7j8$1@smc.vnet.net>

>From my little experience, the fastest way to display such a thing
(large matrix) is to use Graphics[Raster[]]. Try to avoid
ColorFunction option, it involves the front end and slows down things.
If you want to use a specific color scale, just generate yourself the
needed pixel information (monochrome scale or rgB components) it is
faster. Note that the first element is on the lower left with
Graphics[Raster[]] (it can easily be fixed if you want it the other
way) and that by default 0 is black. I was told by Wolfram support
right after Mathematica 6.0 release that it was in the plans to speed
up ArrayPlot, but was not given any timeframe.

Cordially.

Guy Lamouche 

On Fri, 14 Dec 2007 08:57:27 +0000 (UTC), Will
<secandum.oculi at gmail.com> wrote:

>I'm trying to visualize the elements of an actively changing matrix, while performing manual finite difference integration.
>
>I've found using a Dynamic ArrayPlot on the matrix works the best; however, the performance is terribly slow. I probably get ~10 fps on the ArrayPlot. I realize ArrayPlot isn't meant for this. So, what are better ways of showing the elements of a matrix in realtime?
>
>Really, I'd like to view the numerical contents of a matrix in grayscale, something simple. I'm going for performance over quality.
>
>Thanks.


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