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Re: Correlation on log-log? -or- Easy way of removing 0's? [message #20253 is a reply to message #20251]

Fri, 26 May 2000 00:00

Alex Schuster
Messages: 124
Registered: February 1997

Senior Member

Simon de Vet wrote:

> I think that this may be because some of the values are 0, and this
> makes my computer explode (metaphorically speaking, of course). Is there
> an easy way of fixing this problem without loops? Could there be another
> cause of my problem?

To use correlate() with all positive values only, you can do something
like this:

index = where( array1 gt 0.0 and array2 gt 0.0 )
result = correlate( alog( array1[index] ), alog( array2[index] ) )

Alex
--
Alex Schuster Wonko@weird.cologne.de PGP Key available
alex@pet.mpin-koeln.mpg.de

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		Re: Correlation on log-log? -or- Easy way of removing 0's? By: noymer on Fri, 26 May 2000 00:00
		Re: Correlation on log-log? -or- Easy way of removing 0's? By: Craig Markwardt on Fri, 26 May 2000 00:00
		Re: Correlation on log-log? -or- Easy way of removing 0's? By: Alex Schuster on Fri, 26 May 2000 00:00

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