[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Help-gsl] linear regression, f-statistic and vectors

From: Brian Gough
Subject: Re: [Help-gsl] linear regression, f-statistic and vectors
Date: Sat, 28 Jul 2007 20:16:14 +0100
User-agent: Wanderlust/2.14.0 (Africa) Emacs/22.1 Mule/5.0 (SAKAKI)

At Thu, 26 Jul 2007 12:53:36 +0200,
Benjamin Otto wrote:
> gsl_fit_linear expects two array of type double so for my previous tests
> I just created some matching arrays. For future calculations I would
> like to use vectors. Now can I transform a gsl_vector into such a
> "normal" double array so it is accepted by the linear regression
> function? I don't find any matching vector view in the manual. Or do I
> have to loop over each single element, get the value and copy it into a
> new double array?

The gsl vector types are mainly intended for linear algebra.  If you
just have "data" it's simpler to use an ordinary array for it -- this
is why the statistics functions only take arrays.
We don't have a routine for the f-test, but you can obtain the
F-distribution parameters from the cdf functions.

Brian Gough

reply via email to

[Prev in Thread] Current Thread [Next in Thread]