tril - Lower triangular part of matrix
Syntax
L = tril(X)
L = tril(X,k)
Description
L = tril(X) returns the lower triangular
part of X.
L = tril(X,k) returns the elements
on and below the kth diagonal of X. k = 0 is
the main diagonal, k > 0 is above the main diagonal, and k
< 0 is below the main diagonal.
Examples
tril(ones(4,4),-1)
ans =
0 0 0 0
1 0 0 0
1 1 0 0
1 1 1 0See Also
diag, triu
 | treeplot | | trimesh |  |
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