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Re: array convol optimizationv slow now [message #67286 is a reply to message #67285]

Mon, 13 July 2009 15:57

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

newerjazz writes:

> I have an array of [2,100,000,000] corresponding to x, y and
> 100,000,000 particles. I need to render these particles as gasussian
> spots at x, y locations
>
> Currently, I run a for loop through each particle and render each
> particle in this for loop; it takes forever.

Not to mention it probably takes a display screen
the size of a city block to render the mess in
the kind of resolution that allows you to actually
make something of it.

Have you tried plotting a few hundred (maybe even
a few thousand) random points to see if you can draw
the same conclusions you were drawing by plotting all
the points?

Cheers,

David

--
David Fanning, Ph.D.
Coyote's Guide to IDL Programming (www.dfanning.com)
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: array convol optimizationv slow now By: Chris[6] on Mon, 13 July 2009 16:53
		Re: array convol optimizationv slow now By: David Fanning on Mon, 13 July 2009 16:26
		Re: array convol optimizationv slow now By: newerjazz on Mon, 13 July 2009 16:10
		Re: array convol optimizationv slow now By: David Fanning on Mon, 13 July 2009 15:57
		Re: array convol optimizationv slow now By: newerjazz on Tue, 14 July 2009 08:31

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