function arg

Returns the argument of the complex number X (the angle of the polar representation of a complex number).

result = arg(X)

X:   The value whose imaginary part is to be returned. This can be a number (integer, real, complex) or a matrix. If X is a matrix, a matrix of the same size is returned where each element represents the result of the operation.

See also
function real
function imag
function abs
function complex
function conj