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## Re: [Help-gsl] Computing R-square for linear regression

**From**: |
Patrick Alken |

**Subject**: |
Re: [Help-gsl] Computing R-square for linear regression |

**Date**: |
Tue, 25 Sep 2007 12:35:48 -0600 |

**User-agent**: |
Mutt/1.4.2.2i |

This does sound useful...do you want to make a patch? :-). For backwards
compatibility it might be best to make a separate function that takes
chi^2 and the data as input and computes R^2, rather than modify the
existing api.
On Tue, Sep 25, 2007 at 12:12:49PM -0500, Barrett C. Foat wrote:
>* It would be handy if the gsl functions return R-sq. too, though, since it *
>* is a more meaningful metric of the fit.*
>* *
>* On Tuesday 25 September 2007 11:52, Julian Winter wrote:*
>* > Hi,*
>* >*
>* > Can anyone tell me how to get the R-square value from the GSL linear*
>* > regression functions, specifically, gsl_multifit_linear and*
>* > gsl_fit_linear? They only seem to return the chi-square.*
>* >*
>* > Thanks,*
>* >*
>* > Julian Winter*
>* > GDA Corp.*
>* > 200 Innovation Blvd., Suite 234*
>* > State College, PA 16803*
>* > 814-237-4060 (tel)*
>* > 814-689-3375 (fax)*
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>* >*
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