[SciPy-user] decimate

Bill Baxter wbaxter@gmail....
Sat Oct 25 14:53:10 CDT 2008


On Sun, Oct 26, 2008 at 4:42 AM, Travis E. Oliphant
<oliphant@enthought.com> wrote:
> John Hunter wrote:
>> One of the functions I used to use a lot in matlab was decimate, which
>> downsamples data after doing a low pass filter to prevent aliasing.
>>
>
> You can use the function resample in scipy.signal.  It uses a Fourier
> method for the low-pass filter.
>
> resample(x, len(x)/q)
>
> should give a similar result as decimate(x, q)

Ooh, wiki fodder!
Pasted this tidbit here: http://www.scipy.org/NumPy_for_Matlab_Users

--bb


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