Won't work if the list has more than 2 matrices. Andy
From: Roger Peng [mailto:rpeng at stat.ucla.edu] 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 ______________________________________________ R-help at stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
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