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
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