[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Help-gsl] spectrogram analysis ?
From: |
Brian Gough |
Subject: |
Re: [Help-gsl] spectrogram analysis ? |
Date: |
Fri, 22 Jan 2010 15:40:17 +0000 |
User-agent: |
Wanderlust/2.14.0 (Africa) Emacs/22.1 Mule/5.0 (SAKAKI) |
At Sat, 16 Jan 2010 17:07:14 +0100,
wally wrote:
>
> A spline interpolation and its derivative on this data works nice .
> I presume the integration will also work to find the areas, but i do
> not know how to get the zeropoints from the 1st derivative "
> gsl_spline_eval_deriv" results to determine the peaks.
>
> How to find the zero points ? Is there a peakfinder on a dataset
> known ? Is there an example sourcecode known which handle this
> problem ?
There isn't any example of peakfinding. If you want to determine the
maximum analytically, the source code for the *_integ and *_deriv
functions in the interpolation/ directory contain the spline formulas.
--
Brian Gough
GNU Scientific Library -
http://www.gnu.org/software/gsl/