I have three matrices like these:
m1 <- matrix(c(1,2,3,4), nrow=2, ncol=2,byrow=T)
m2 <- matrix(c(1,2,3,4,5,6,7,8,9), nrow=3, ncol=3,byrow=T)
m3 <- matrix(c(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16), nrow=4, ncol=4,byrow=T)
I want to calculate the mean of all these three matrices' values all together. So that the mean will be calculated out of all 29 values from the 3 matrices.
I want to calculate the mean of all these three matrices altogether. So that the mean will be calculated out of all 29 values from the 3 matrices.
Collect in a list, unlist() and calculate the mean.
> mean(unlist(list(m1, m2, m3)))
[1] 6.586207
This can be further customised. Get objects with certain pattern,Filter() for matrix, and unlist().
> mean(unlist(Filter(is.matrix, mget(ls(pattern = 'm\\d{1}')))))
[1] 6.586207