numpy.angle#

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

Return the angle of the complex argument.

Parameters:
zarray_like

A complex number or sequence of complex numbers.

degbool, optional

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

Returns:
anglendarray or scalar

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

Notes

This function passes the imaginary and real parts of the argument toarctan2 to compute the result; consequently, it follows the conventionofarctan2 when the magnitude of the argument is zero. See example.

Examples

>>>importnumpyasnp>>>np.angle([1.0,1.0j,1+1j])# in radiansarray([ 0.        ,  1.57079633,  0.78539816]) # may vary>>>np.angle(1+1j,deg=True)# in degrees45.0>>>np.angle([0.,-0.,complex(0.,-0.),complex(-0.,-0.)])# conventionarray([ 0.        ,  3.14159265, -0.        , -3.14159265])
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