[R] mean and array

[Huntsinger, Reid]

In general this is what "apply" does. In your example you could use
rowMeans(ar) as well, I think.

Reid Huntsinger

-----Original Message-----
From: Olivier Martin [mailto:olivier.martin at inrialpes.fr]
Sent: Tuesday, July 02, 2002 10:55 AM
To: r-help
Subject: [R] mean and array


Hi all,

I have an array, one say ar, with 3 dimensions.
dim(ar)
 >200   3   4
I would like to calculate the mean on the third dimension.
mean(ar[1,1,]),mean(ar[1,2,]) etc..., mean[200,3,].

How can i do this ?

Thanks

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Olivier MARTIN
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