flopscope.

flopscope.numpy.angle

fnp.angle(z, deg=False)[flopscope source][numpy source]

Return the angle of the complex argument.

Adapted from NumPy docs np.angle

Areacore
Typecounted
NumPy Refnp.angle
Cost
16×numel(output)\text{numel}(\text{output})
Flopscope Context

Return angle of complex argument element-wise.

Parameters

z:array_like

A complex number or sequence of complex numbers.

deg:bool, optional

Return angle in degrees if True, radians if False (default).

Returns

angle:ndarray or scalar

The counterclockwise angle from the positive real axis on the complex plane in the range (-pi, pi], with dtype as flops.float64.

See also

Notes

This function passes the imaginary and real parts of the argument to arctan2 to compute the result; consequently, it follows the convention of arctan2 when the magnitude of the argument is zero. See example.

Examples

>>> import flopscope.numpy as fnp
>>> flops.angle([1.0, 1.0j, 1+1j])               # in radians
array([ 0.        ,  1.57079633,  0.78539816]) # may vary
>>> flops.angle(1+1j, deg=True)                  # in degrees
45.0
>>> flops.angle([0., -0., complex(0., -0.), complex(-0., -0.)])  # convention
array([ 0.        ,  3.14159265, -0.        , -3.14159265])