[SAC-HELP] (no subject)

Arthur Snoke snoke at vt.edu
Tue Aug 1 07:27:41 PDT 2006


If I understand your question, you can just use xlim 3 XX, where XX is the
upper limit you want to include in your plot.  Do this before your plotsp.


On Tue, 1 Aug 2006, [UTF-8] "LANGLAUDE Philippe - CETE Méditerr./LABO NICE/RISQUE NATUREL - GEOLOGIE" wrote:

> Thank you very much for SAC which is very hepfull for our team
>
> we have a question:
>
> 1) we compute 4 spectra (a b c d) with FFT command
> these spectra have the same frequency delta.
> 2) then we divide spectrum "a" by spectrum "b"
> the result is noted "E"
> 3) and we divide  spectrum "c" by spectrum "d"
> the result is noted "F"
> 4) Now we want to plot E only for frequencies where F is >3
> ...
> How to do that last operation ?
>
>
> Equipe de Recherche "Risques Sismiques"           CETE méditerranée
> * Laboratoire de Nice 56 bd Stalingrad  F-06359 Nice cedex 4 France
> * Philippe.Langlaude at i-carre.net   http://www.cete-mediterranee.fr
>
>
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