[R] sum

[Roger Peng]

How about something like:

> matlist <- list(matrix(1:16, 4, 4), matrix(2, 4, 4))
> do.call("+", matlist)
     [,1] [,2] [,3] [,4]
[1,]    3    7   11   15
[2,]    4    8   12   16
[3,]    5    9   13   17
[4,]    6   10   14   18
> 

-roger
_______________________________
UCLA Department of Statistics
http://www.stat.ucla.edu/~rpeng

On Wed, 23 Apr 2003, Luis Silva wrote:

> Dear helpers
> 
> I have a list where each element is a matrix (the list is 
> obtained with lapply). I want to sum those matrices. Is there a 
> function to do that? The sum function sums all the elements...
> --
> 
> 
> http://adsl.sapo.pt
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>