G'day Shubha,
On Wed, 4 Jun 2008 20:23:35 +0530
"Shubha Vishwanath Karanth" <[EMAIL PROTECTED]> wrote:
> Something like do.call("+",l) is not working...why is this?
Well, as the error message says, "+" is either a unary or a binary
operator, i.e. it takes either one or two arguments, but not more.
> I may not be knowing the number of matrices in the list...
This is perhaps a bit complicated but it works:
R> a=b=c=d=matrix(1:4,2,2)
R> l=list(a,b,c,d)
R> library(abind) ## may have to install this package first
R> apply(do.call(abind, list(l, along=3)), 1:2, sum)
[,1] [,2]
[1,] 4 12
[2,] 8 16
HTH.
Cheers,
Berwin
=========================== Full address =============================
Berwin A Turlach Tel.: +65 6515 4416 (secr)
Dept of Statistics and Applied Probability +65 6515 6650 (self)
Faculty of Science FAX : +65 6872 3919
National University of Singapore
6 Science Drive 2, Blk S16, Level 7 e-mail: [EMAIL PROTECTED]
Singapore 117546 http://www.stat.nus.edu.sg/~statba
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
