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Re: expfit vs harminv - which is faster/smaller ?

From: Francesco Potortì
Subject: Re: expfit vs harminv - which is faster/smaller ?
Date: Tue, 16 Dec 2008 15:18:10 +0100

>> By reading the docs, it seems to me that they use different methods,
>> are thought for different problems and require different inputs:
>> expfit requires you to give it a number of harmonics to find, while
>> harminv wants a range where to search for them.
>> That said, I should make it clear that I have no experience
>> whatsoever with those methods.

>This is what I read in 'man harminv':
>   -f nf Specify a lower bound nf on the number of spectral basis
>   functions (defaults to 100), setting a lower bound on the number of
>   modes to search for.  This option is often a more convenient way to
>   specify the number of basis functions than the -d option, above,
>   which is why it is the default.

As far as I read, this is a lower bound on the search space.  Expinv, on
the other hand, wants you to tell it exactly how many harmonic functions
it should find.

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