LOTRIX

Purpose:

Returns the lower triangle of a matrix, excluding the main diagonal.

LOTRIX(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.