[R] mean of 3D arrays

[R. Michael Weylandt <michael.weylandt@gmail.com>]

(x1+x2+x3)/3

I'm not aware of a "pmean" function but it wouldn't be hard to homebrew one if you are comfortable with the ... argument

I'll draft one up and send it along

Michael Weylandt

On Oct 5, 2011, at 9:00 AM, Martin Batholdy <batholdy at googlemail.com> wrote:

> Hi,
> 
> I have multiple three dimensional arrays.
> 
> Like this:
> 
> x1 <- array(rnorm(1000, 1, 2), dim=c(10, 10, 10))
> x2 <- array(rnorm(1000, 1, 2), dim=c(10, 10, 10))
> x3 <- array(rnorm(1000, 1, 2), dim=c(10, 10, 10))
> 
> 
> Now I would like to compute the mean for each corresponding cell.
> As a result I want to get one 3D array (10 x 10 x 10) in which at position x, y, z is the mean of the corresponding values of x1, x2 and x3 (at position x, y, z).
> 
> 
> How can I do this?
> 
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