Returns the lower triangle of a matrix, excluding the main diagonal.
LOTRIX(a)
a |
- |
A matrix. |
An array of size(a) consisting of the lower triangle of a, excluding the main diagonal, with the other elements set to 0.
W1: ones(3)
W2: lotrix(W1)
W2 == {{0, 0, 0},
{1, 0, 0},
{1, 1, 0}}
LOTRIX excludes the main diagonal. Use LOTRI to include the main diagonal.
See TRIL to return the lower matrix below a specified diagonal.