Retrieving the Real or Complex part
num.real for real value
num.imag for complex value
Defining complex values
1j
np.complex(0,1)
Retrieving the Magnitude and Phase part
np.abs(num)
np.angle(num)
Back to complex number
mag * np.exp(1j * angle)
Reference
https://stackoverflow.com/questions/13567089/scale-the-real-part-of-complex-numpy-array
https://stackoverflow.com/questions/28872862/equivalent-of-j-in-numpy
https://stackoverflow.com/questions/16444719/python-numpy-complex-numbers-is-there-a-function-for-polar-to-rectangular-co
Byung Hoon Ahn 