Try this: (mat1 + mat2 + mat3) / 3
On Mon, May 18, 2009 at 8:40 PM, dxc13 <dx...@health.state.ny.us> wrote: > > useR's, > 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, > dxc13 > -- > View this message in context: > http://www.nabble.com/how-to-calculate-means-of-matrix-elements-tp23607694p23607694.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > ______________________________________________ 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.
