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Re: simple array math question [message #33813 is a reply to message #33713]

Fri, 24 January 2003 07:50

Pepijn Kenter
Messages: 31
Registered: April 2002

Member

"Kenneth Bowman" <k-bowman@null.tamu.edu> wrote in message
news:k-bowman-4D0582.08381824012003@news.tamu.edu...
> In article <b0rce6$23c$1@news.surfnet.nl>,
> "Pepijn Kenter" <kenter@tpd.tno.nl> wrote:
>
>> And does any IDL-wizard know a similar trick to average each row/column
of
>> a?
>> i.e. to replace the following lines:
>>
>> result = dblarr(3)
>> for i = 0, 2 do result[i] = mean(a[*,i])
>
> That's an easy one:
>
> result1 = TOTAL(a, 1, /DOUBLE)/n1
> result2 = TOTAL(a, 2, /DOUBLE)/n2
>
> where n1 and n2 are the sizes of the first and second dimensions,
> respectively.
>
> Ken Bowman

Thanks, but what I actually meant was a way where you can replace the mean
function by any, arbitrary function.
I forgot about the dimension parameter of the TOTAL function, so my example
was a bad one. Sorry.

Pepijn.

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[Message index]

		simple array math question By: Sean Raffuse on Thu, 16 January 2003 12:05
		Re: simple array math question By: Pepijn Kenter on Tue, 28 January 2003 05:40
		Re: simple array math question By: Craig Markwardt on Mon, 27 January 2003 11:54
		Re: simple array math question By: JD Smith on Mon, 27 January 2003 10:20
		Re: simple array math question By: JD Smith on Mon, 27 January 2003 10:00
		Re: simple array math question By: Craig Markwardt on Sun, 26 January 2003 12:11
		Re: simple array math question By: Craig Markwardt on Fri, 24 January 2003 11:29
		Re: simple array math question By: Pepijn Kenter on Fri, 24 January 2003 07:50
		Re: simple array math question By: K. Bowman on Fri, 24 January 2003 06:38

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