is.triu {ramify}

Upper Triangular Matrix Test

Description

Determine if a Matrix is Upper Triangular

Usage

is.triu(x)

Arguments

x

A matrix

Value

Logical indicating whether the given matrix is lower triangular.

Examples

m <- mat("1, -1, -1, -1; 0, 1, -2, -2; 0, 0, 1, -3; 0, 0, 0, 1")
is.triu(m)
is.triu(eye(3, 5))