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Re: Question about the TOTAL function. [message #43539]

Fri, 15 April 2005 09:38

Benjamin Hornberger is currently offline

Benjamin Hornberger
Messages: 258
Registered: March 2004

Senior Member

Have a look at the "dimension" parameter of the TOTAL function. You need
to do

SUMX = TOTAL(matrix, 2)

or maybe 1 instead of 2 -- I didn't really understand which dimension
you want to sum over.

Benjamin

Nuno Oliveira wrote:
> I have a question that somebody that works with IDL many had faced before.
> Imagine I have a matrix(X,Y), no matter the type of variable, and if want na
> array with the projection along de x axis, something like
>
>
>
> for i = 0, n-1 do $
>
> SUMX = TOTAL(i, *)
>
>
>
> How can I do it without the FOR cicle.
>
>
>
> If I try
>
>
>
> SUMX[ 0:N-1 ] = TOTAL( 0:N-1, * )
>
>
>
> The function returns the total of the matrix for the every position of SUMX.
> Is there a way that I can do it quicker?
>
>
>
> Thanks in advance,
>
>
>
> Greeting,
>
>
>
> Nuno.
>
>

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[Message index]

		Re: Question about the TOTAL function. By: Benjamin Hornberger on Fri, 15 April 2005 09:38
		Re: Question about the TOTAL function. By: James Kuyper on Fri, 15 April 2005 09:08
		Re: Question about the TOTAL function. By: rexford.newbould on Fri, 15 April 2005 09:05

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