Hello,
I would like to do something with a matrix:
1) The columns should be compared pairwise.
2) And the result should be a matrix.
I try to illustrate the problem with a testset.
> m
rs1 rs2 rs3
[1,] 1 1 1
[2,] 0 1 0
[3,] 2 0 1
> dput (m)
structure(c(1, 0, 2, 1, 1, 0, 1, 0, 1), .Dim = c(3L, 3L), .Dimnames = list(
NULL, c("rs1", "rs2", "rs3")))
> which (m[,1] !=0&m[,2] != 0) #How many rows between two columns that are
both non zero
How can I automate the pairwise which-statement?
As result I would like to have a matrix like this
rs1 rs2 rs3
rs1
rs2 1
rs3 2 1
Is there a tool in R that helps?
Thanks
Hermann
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