istriu

Checks if matrix is diagonal.

Syntax

• tf = isdiag(M)

Input argument

• M - a numeric array

Output argument

• tf - logical: result of 'isdiag'.

Description

isdiag returns an scalar logical if entry is diag.

Example

A = eye(3, 3);
R = isdiag(A)
R = isdiag(A(:,1))

See also

istriu, istril.

History

Author

Allan CORNET