[R] how to calculate means of matrix elements
ggrothendieck at gmail.com
Tue May 19 05:21:53 CEST 2009
(mat1 + mat2 + mat3) / 3
On Mon, May 18, 2009 at 8:40 PM, dxc13 <dxc13 at health.state.ny.us> wrote:
> I have several matrices of size 4x4 that I want to calculate means of their
> respective positions with. For example, consider I have 3 matrices given by
> the code:
> mat1 <- matrix(sample(1:20,16,replace=T),4,4)
> mat2 <- matrix(sample(-5:15,16,replace=T),4,4)
> mat3 <- matrix(sample(5:25,16,replace=T),4,4)
> The result I want is one matrix of size 4x4 in which position [1,1] is the
> mean of position [1,1] of the given three matrices. The same goes for all
> other positions of the matrix. If these three matrices are given in
> separate text files, how can I write code that will get this result I need?
> Thanks in advance,
> View this message in context: http://www.nabble.com/how-to-calculate-means-of-matrix-elements-tp23607694p23607694.html
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> and provide commented, minimal, self-contained, reproducible code.
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