Diagonal Indices of a Matrix
Returns a matrix of logicals the same size of a given matrix with entries 'TRUE' in the upper triangle close to the diagonal.
diag.ind(x, n = 1, diag = TRUE)
x |
a matrix. |
n |
the number of elements from the diagonal to include. |
diag |
logical. Should the diagonal be included? |
Basic function useful for masking elements close to the diagonal of a given matrix.
Returns a matrix of logicals the same size of a given matrix with entries 'TRUE' in the upper triangle close to the diagonal.
Barry Grant
Grant, B.J. et al. (2006) Bioinformatics 22, 2695–2696.
diag.ind( matrix(,ncol=5,nrow=5), n=3 )
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