triu
- triu(X) returns the upper triangular matrix of X
- triu(X,k) returns the elements of X, on and below its k-th diagonal
Examples
> X = ones(3) [X:3x3 double] > triu(X)# 1 1 1 0 1 1 0 0 1 > triu(X,-1)# 1 1 1 1 1 1 0 1 1 > triu(X, 1)# 0 1 1 0 0 1 0 0 0