meaning of numpy.fft coefficients

Corey Richardson kb1pkl at aim.com
Fri Jul 8 20:52:23 EDT 2011


Excerpts from Joey's message of Fri Jul 08 20:14:29 -0400 2011:
> the list generated by numpy is of form [ a+bi, c+di, ...]
> 
> could anybody tell me the meaning of the coefficients a and b? I am
> very confused about fourier transform!
> 

a+bi is a typical complex number. a is the real part, b is the imaginary.
Python uses j,

>>> 4+5j
(4+5j)

http://en.wikipedia.org/wiki/Complex_number
http://docs.python.org/library/stdtypes.html#typesnumeric
-- 
Corey Richardson
  "Those who deny freedom to others, deserve it not for themselves"
     -- Abraham Lincoln
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 490 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/python-list/attachments/20110708/f98a4792/attachment-0001.sig>


More information about the Python-list mailing list