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Re: [Help-gsl] Numerical integration
From: |
Inigo Aldazabal Mensa |
Subject: |
Re: [Help-gsl] Numerical integration |
Date: |
Thu, 3 Sep 2009 13:29:02 +0200 |
User-agent: |
KMail/1.9.10 |
El Miércoles, 2 de Septiembre de 2009, Jonny Taylor escribió:
...
> I feel that because of this
> specific form there ought to be some sort of shortcut or special
> technique that could separate out the "carrier wave", so that
> effectively all that needs to be sampled is the slowly-varying
> envelope. Can anyone suggest a suitable technique that I could use for
> this? (ideally one implemented in GSL, but I can code it up from
> scratch if required). Someone suggested to me that some sort of trick
> involving fourier transforms might help, but I haven't really got
> anywhere with that as yet.
>
upps...sorry for he last post.
You could try splitting the exponential and the function in its real and
imaginary part and using sin and cos as weight functions.
http://www.gnu.org/software/gsl/manual/html_node/QAWO-adaptive-integration-for-oscillatory-functions.html
> Thanks in advance for any suggestions
> Jonny
>
>
>
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