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Re: Mutivariate Regression (GSL Topic: "Fitting")
- To: "Tom Browder" <tom2 at fwb dot asi dot srs dot com>
- Subject: Re: Mutivariate Regression (GSL Topic: "Fitting")
- From: Brian Gough <bjg at network-theory dot co dot uk>
- Date: Fri, 27 Jul 2001 15:09:30 +0100 (BST)
- Cc: <gsl-discuss at sources dot redhat dot com>
- References: <01c1169d$40b58900$cb01000a@tombrowd>
- Reply-To: gsl-discuss at sources dot redhat dot com
Tom Browder writes:
> I just started using GSL and wonder if it is possible to allow for
> a constant in the multifit function?
It should be possible. For gsl_multifit_linear use a column of 1's in
the matrix 'X'. For the non-linear case it should work the same as
other parameters. If it does not work let us know.
> The following would also be nice additions to the multifit
> function suite (see MS Excel regression output for example):
> 1. Produce the correlation coefficient (r) and other statistics.
> 2. Allow fit variable weighting (not observation weighting).
> 3. Allow for principal factor computations.
Thanks for the suggestions, I'll add them to the TODO file in case
anyone wants to work on them.
regards
Brian Gough