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Re: Summing arrays without loops [message #27313]

Tue, 16 October 2001 13:24

Mark Hadfield
Messages: 783
Registered: May 1995

Senior Member

From: "Matt Jolly" <mattj@ntsg.umt.edu>
> I have a 3d array of daily precipitation data for the globe that I would
> like to sum for the entire year but I would like to do it without looping.
> The array is initialized as follows:
>
> IDL> data = fltarr(365,192,94)
>
> where 365 is the number of days, 192 is the number of longitudes and 94 is
> the number of latitudes.
>
> Is there a way to sum the daily values without writing a nested loop?

There sure is: TOTAL(data, 1)

---
Mark Hadfield
m.hadfield@niwa.cri.nz http://katipo.niwa.cri.nz/~hadfield
National Institute for Water and Atmospheric Research

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		Re: Summing arrays without loops By: Mark Hadfield on Tue, 16 October 2001 13:24
		Re: Summing arrays without loops By: Ken Mankoff on Tue, 16 October 2001 13:07

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