is.triu: Upper Triangular Matrix Test
In ramify: Additional Matrix Functionality

Determine if a Matrix is Upper Triangular

1	is.triu(x)

x

A matrix

Logical indicating whether the given matrix is lower triangular.

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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))

ramify documentation built on May 2, 2019, 5:58 a.m.

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