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error estimates (a little off-topic maybe) [message #32405]

Thu, 03 October 2002 12:38

src
Messages: 9
Registered: January 2001

Junior Member

This question might be a little off-topic, but since a lot of
scientists/engineers use IDL, someone may have some ideas.

What I'd like to do is measure the amplitude (and estimate the error) of a
peak in a Fourier transform. Now I could fit the peak with a Gaussian
function, and if I use CurveFit, it will give me an error estimate too.
The problem is, the error estimate is dependent on on the number of points
fitted, as one might expect with such routines. Since I wish to perform a
hypothesis test later, I could get the outcome I want just be increasing
the number of frequency points in the Fourier transform, so that the error
is small and my hypothesis is accepted.

Does anyone know of a way of estimating such an error which is not
dependent on the number of points fitted?

cheers,
S

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error estimates (a little off-topic maybe)

By: src on Thu, 03 October 2002 12:38

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