In R, match function for rows or columns of matrix

Question

The value matching function in R is very useful. But from my understanding, it does not sufficiently support two or high dimensional inputs.

For examp

Answer 1

match will work on lists of atomic vectors. So to match rows of one matrix to another, you could do:

match(data.frame(t(x)), data.frame(t(y)))

t transposes the rows into columns, then data.frame creates a list of the columns in the transposed matrix.