Returns a matrix of logicals the same size of a given matrix with
TRUE in the lower or upper triangle.
lower.tri(x, diag = FALSE) upper.tri(x, diag = FALSE)
a matrix or other R object with
logical. Should the diagonal be included?
col on which
upper.tri() are built.
(m2 <- matrix(1:20, 4, 5)) lower.tri(m2) m2[lower.tri(m2)] <- NA m2
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.