Hi Andrei,

you can use fftfreq in DSP.jl. The syntax is exactly the same as for your
function: http://dspjl.readthedocs.org/en/latest/util.html#fftfreq.

Best

--
João Felipe Santos


On Wed, Jul 2, 2014 at 9:28 AM, Andrei Berceanu <andreiberce...@gmail.com>
wrote:

> I have written the following function to provide the same functionality as
> numpy's fftfreq (
> http://docs.scipy.org/doc/numpy/reference/generated/numpy.fft.fftfreq.html
> )
>
> ```
> function fftfreq(n::Int64, d::Float64)
>   N = fld(n-1,2)
>   p1 = [0:N]
>   p2 = [-fld(n,2):-1]
>   return [p1, p2]/(d*n)
> end
> ```
>
> From the response on https://github.com/JuliaLang/julia/issues/7317, I
> understand that such a function is already implemented in the DSP.jl
> package, perhaps using the immutable Frequencies?
> I am not quite sure how to use that though, could anyone please provide a
> concrete example which reproduces the use of fftfreq? Tnx!
>

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