[R] average matrices across a list

[Gregory Ryslik]

Sorry, I forgot to add that some of the entries in various matrices have NA in them.
On Sep 12, 2010, at 3:40 PM, Gregory Ryslik wrote:

> Hi,
> 
> I have a list of several hundred 2 dimensional matrices, where each matrix is n x m. What I need to do is that for each n,m I  need an average over all the lists. This would collapse it down to just one nxm matrix. Any easy ways to do that? As always, I'd like to avoid a for loop to keep computational time low! Thanks again everyone!
> 
> Cheers,
> G
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