[R] about Cox-Box transformation

Stefano Sofia stefano.sofia at regione.marche.it
Thu Feb 9 14:24:02 CET 2006


Paulo, 
thank you for the straightforward hint. 
But then, I should use the Box-Cox transformation to a set of data,
whose class at the moment is data.frame. 
The help says only lm and aov objects can be handled. What should I do?


thank you
Stefano


On Thu, 2006-02-09 at 10:56 -0200, Paulo Justiniano Ribeiro Jr wrote:
> first load the package with:
> 
> require(MASS)
> 
> and then use the boxcox() function
> 
> 
> On Thu, 9 Feb 2006, Stefano Sofia wrote:
> 
> > Date: Thu, 09 Feb 2006 11:51:02 +0000
> > From: Stefano Sofia <stefano.sofia at regione.marche.it>
> > To: r-help at stat.math.ethz.ch
> > Subject: [R] about Cox-Box transformation
> > 
> > Dear R-users,
> > I am using R version 1.8.0-1 under Suse 8.2.
> > I need to use the boxcox command because I want to apply a Cox-Box
> > transformation to a vector of rainfall values.
> > Within the libraries, the MASS library is present, but I don't know
> > whether this means that is automatically installed or not.
> > The command doesn't work. What do I have to do in order to make it
> > working? Is just a problem of installation or simply of recalling the
> > right command?
> >
> > thank you for your help
> > Stefano
> >
> > ______________________________________________
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> >
> 
> Paulo Justiniano Ribeiro Jr
> LEG (LaboratÃ³rio de EstatÃ­stica e GeoinformaÃ§Ã£o)
> Departamento de EstatÃ­stica
> Universidade Federal do ParanÃ¡
> Caixa Postal 19.081
> CEP 81.531-990
> Curitiba, PR  -  Brasil
> Tel: (+55) 41 3361 3573
> Fax: (+55) 41 3361 3141
> e-mail: paulojus at est.ufpr.br
> http://www.est.ufpr.br/~paulojus




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