On Oct 5, 2011, at 8:14 AM, R. Michael Weylandt <[email protected]
> wrote:
(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
pmean <- function(lis) Reduce("+",lis)/length(lis)
res <- pmean( list(x1,x2,x3) )
> str(res)
num [1:10, 1:10, 1:10] -0.879 0.843 -2.184 1.33 -0.675 ...
--
David.
Michael Weylandt
On Oct 5, 2011, at 9:00 AM, Martin Batholdy
<[email protected]> 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?
e.
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