multiply matrix by i in Numpy

Asked Aug 29 '15 at 17:11

Active Aug 29 '15 at 17:12

Viewed 36 times

I am using numpy and am trying the following computation:

efield = p+ (np.sqrt(-1))*q       #(where p and q are arrays)

however I get the following error:

Warning (from warnings module):
  File "C:\Users\Desktop\Polarization E Feild.py", line 115
    efield = p+ (np.sqrt(-1))*q
RuntimeWarning: invalid value encountered in sqrt

Traceback (most recent call last):
  File "C:\Users\Desktop\Polarization E Feild.py", line 115, in <module>
    efield = p+ (np.sqrt(-1))*q
ValueError: cannot convert float NaN to integer

How is i (square root of -1) used in numpy?

edited Aug 29 '15 at 17:12

ZdaR

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asked Aug 29 '15 at 17:11

alex

4

http://stackoverflow.com/questions/17766774/how-can-i-take-the-square-root-of-1-using-python/17767080#17767080 – Warren Weckesser Aug 29 '15 at 17:17
4

Why not write `efield = p + 1j*q`? – Warren Weckesser Aug 29 '15 at 17:18

multiply matrix by i in Numpy

0 Answers0