Message-ID: <3A822319EB35174CA3714066D590DCD5C4FA47@usrymx25.merck.com>
Date: 2003-04-23T19:31:50Z
From: Liaw, Andy
Subject: sum
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
>
------------------------------------------------------------------------------
Notice: This e-mail message, together with any attachments, cont... {{dropped}}