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Re: [Help-gsl] derivative of a data set

From: Brian Gough
Subject: Re: [Help-gsl] derivative of a data set
Date: Fri, 30 Jun 2006 16:46:43 +0100
User-agent: Wanderlust/2.14.0 (Africa) Emacs/21.3 Mule/5.0 (SAKAKI)

At Fri, 30 Jun 2006 09:21:58 +0200,
Eric Germaneau wrote:
> I wish to use gsl in oder to perform the derivative of a data set 
> contains in an one dimensional array.
> It seems that gsl numerical differentiation estimate the derivative of 
> function only.
> Does anyone as an idea?
> Do I have to do it "by hand" using for example u'(x) = ( u(x+h) - u(x) ) 
> / h?

Try gsl_spline_eval_deriv, see the manual for details.

best regards,

Brian Gough

Network Theory Ltd,
Publishing the GSL Manual -

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