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Re: Faster approach for total(data,dimension) possible? [message #67070 is a reply to message #67069]

Wed, 24 June 2009 04:33

wlandsman
Messages: 743
Registered: June 2000

Senior Member

> I also found a smaller speedup with the following code, which is based
> on the theory that mathematical operations are always quickest on byte
> data.
>
> mask = total(data GT 0,/preserve_type,3) GT 0
>
I should add that you shouldn't use the BYTE method if you have more
than 255 images in your cube. In any case, I found it wasn't as
fast as using TOTAL(/INTEGER). --Wayne

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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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