Matrix column flip when recycled

Only vectors recycle. If you don't want the behaviour if the matrix to reflect that of the underlying vector then don't use recycling. Instead use indexing.

M.1 <- M.2[rep(1:5,3),]
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Dear list,

I have a matrix M.1 (30x2) into which I would like to paste another
matrix M.2 (10x2) three times. However, the columns get flipped in
every odd-numbered recycle run. How can I avoid this behavior?

M.1 <- matrix(numeric(30*2), ncol = 2)
M.2 <- t(combn(1:5, 2))
M.1[, 1:2] <- M.2

Many thanks for help,

Alrik

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