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Re: fastest way to find the first non-zero value in an array [message #59770 is a reply to message #59680]

Tue, 08 April 2008 07:23

Foldy Lajos
Messages: 268
Registered: October 2001

Senior Member

On Tue, 8 Apr 2008, smasson@locean-ipsl.upmc.fr wrote:

> Hi,
>
> I want to find the first non-zero value of an array. Is there a faster
> way to do this than with the "where" command: (where(array ne 0))[0]
> "Where" will look for all non-zero values and I only need the first
> one. It would be great if I could stop "where" in its search process
> as soon as it found one element...
>
> sebastien
>

(where(array))[0] will be a little bit faster, because it spares a temp
array creation and write.

regards,
lajos

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[Message index]

		fastest way to find the first non-zero value in an array By: smasson on Tue, 08 April 2008 01:04
		Re: fastest way to find the first non-zero value in an array By: Rick Towler on Tue, 08 April 2008 11:41
		Re: fastest way to find the first non-zero value in an array By: Foldy Lajos on Tue, 08 April 2008 07:23

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