Re: [Help-gsl] spectrogram analysis ?

[Brian Gough]

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/