Hello,

My question is about matrixes for R. I have two matrices r and m:

m <- as.matrix(read.table(text="
15 56 44 1 4 7
61 31 63 7 1 3
10 36 99 5 9 6
65 79 88 54 1 1"))
colnames(m) <- c("Z","Q","A","F","D","H")
r <- as.matrix(read.table(text="
15 56 64
10 36 61 "))
colnames(r) <- c("Z","L","O")

I want to extract the rows based on common column (in this case Z column), so the result would be

A
15 56 44 1 4 7
10 36 99 5 9 6

A is the new matrix.

Any Ideas how to ?