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Set matrix row or column names without copying, especially useful for (very) large matrices.
setColnames(matrix, colnames) setRownames(matrix, rownames) setDimnames(matrix, nameslist)
An R matrix
Character vector of column names
Character vector of row names
A two-component list containing rownames and colnames
Adrian Dusa
mat <- matrix(1:9, nrow = 3) setDimnames(mat, list(LETTERS[1:3], letters[1:3]))
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