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Re: Faster approach for total(data,dimension) possible? [message #66999]

Fri, 26 June 2009 07:44

rogass
Messages: 200
Registered: April 2008

Senior Member

Dear all,
thank you for your suggestions. I will pick up JD's approach - like
several times :). For a very large data set (eg. 5000x5000x2000) I
will generally broke it up into chunks. Then within the chunks, I will
generate a mask for the first channel where the pixels have zero
values assuming they are zero-channel representatives. This mask will
be used with the total approach and the ~mask with JD's For-Loop-
approach. After this I will merge both results - result1+result2 eq 2.
This may be faster for a very large data set. Additionally, the
presence of a working gpulib will be tested and used to increase the
computation speed.

All the best

CR

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[Message index]

		Re: Faster approach for total(data,dimension) possible? By: rogass on Fri, 26 June 2009 07:44
		Re: Faster approach for total(data,dimension) possible? By: JDS on Thu, 25 June 2009 08:22
		Re: Faster approach for total(data,dimension) possible? By: wlandsman on Thu, 25 June 2009 05:10
		Re: Faster approach for total(data,dimension) possible? By: rogass on Wed, 24 June 2009 23:58
		Re: Faster approach for total(data,dimension) possible? By: Chris[6] on Wed, 24 June 2009 17:46
		Re: Faster approach for total(data,dimension) possible? By: rogass on Wed, 24 June 2009 15:30
		Re: Faster approach for total(data,dimension) possible? By: Jeremy Bailin on Wed, 24 June 2009 14:04
		Re: Faster approach for total(data,dimension) possible? By: Jeremy Bailin on Wed, 24 June 2009 13:53
		Re: Faster approach for total(data,dimension) possible? By: rogass on Wed, 24 June 2009 13:51
		Re: Faster approach for total(data,dimension) possible? By: wlandsman on Wed, 24 June 2009 09:34
		Re: Faster approach for total(data,dimension) possible? By: rogass on Wed, 24 June 2009 08:38
		Re: Faster approach for total(data,dimension) possible? By: Jean H. on Wed, 24 June 2009 07:33
		Re: Faster approach for total(data,dimension) possible? By: wlandsman on Wed, 24 June 2009 07:19
		Re: Faster approach for total(data,dimension) possible? By: Chris[6] on Wed, 24 June 2009 06:35
		Re: Faster approach for total(data,dimension) possible? By: rogass on Wed, 24 June 2009 05:12
		Re: Faster approach for total(data,dimension) possible? By: wlandsman on Wed, 24 June 2009 04:55
		Re: Faster approach for total(data,dimension) possible? By: rogass on Wed, 24 June 2009 04:44
		Re: Faster approach for total(data,dimension) possible? By: wlandsman on Wed, 24 June 2009 04:33
		Re: Faster approach for total(data,dimension) possible? By: wlandsman on Wed, 24 June 2009 04:19

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