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Re: geometric mean? [message #21626]

Fri, 08 September 2000 02:37

Martin Schultz
Messages: 515
Registered: August 1997

Senior Member

Andrew wrote:
>
> I have no response so I assume the answer is to
> roll your own.
>
> I did:
>
> FUNCTION GEOMEAN, arr
> RETURN, EXP(TOTAL(ALOG(arr))/N_ELEMENTS(arr))
> END
>
> - Andrew
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.

Hi Andrew,

I couldn't find such a routine either so I decided to hack it
together using the algorithm you suggest but including some error
cehcking and more caution with range limits or negative values. You
can find geomean.pro on my web pages:
http://www.mpimet.mpg.de/~schultz.martin/idl/html/libmartin_ schultz.html

Cheers,
Martin

--
[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[ [[[[[[[
[[ Dr. Martin Schultz Max-Planck-Institut fuer Meteorologie [[
[[ Bundesstr. 55, 20146 Hamburg [[
[[ phone: +49 40 41173-308 [[
[[ fax: +49 40 41173-298 [[
[[ martin.schultz@dkrz.de [[
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[Message index]

		Re: geometric mean? By: Martin Schultz on Fri, 08 September 2000 02:37
		Re: geometric mean? By: noymer on Thu, 07 September 2000 18:25
		Re: geometric mean? By: Craig Markwardt on Sun, 17 September 2000 00:00
		Re: geometric mean? By: noymer on Fri, 08 September 2000 09:59

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