Resampling non-uniform sampled data

Lalu Mansinha mansinha at uwo.ca
Thu Apr 2 10:58:40 CDT 2009


There are methods to  determine the spectrum of non-uniformly sampled 
data.  Take a look at the Lomb-Scargle method described in Numerical Recipes
by William Press et. al.   Numerical Recipes is available for several 
software packages, including C.  Matlab/Octave versions of the 
programs may be available on the web.

If you use interp1, my preference is to use the 'spline' method, 
rather than 'linear.'

Cheers

Lalu Mansinha

At 11:08 AM 02/04/2009, Ben Abbott wrote:

>On Thursday, April 02, 2009, at 05:30AM, "Sean87" 
><sean.redmond at nuim.ie> wrote:
> >
> >Hi,
> >
> >I'm fairly new to Octave and I'm attempting to use it to analyse some data
> >that has not been sampled at uniform time intervals.  In order to proceed I
> >need to have the sampling uniform.  Does anyone know of a way to interpolate
> >and resample the data?
> >
> >Thanks
>
>Take a look at interp1
>
>     help interp1
>
>and
>
>     doc interp1
>
>Ben
>_______________________________________________
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>Help-octave at octave.org
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