I stand corrected - thank you for the clarification John.


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On Tue, Feb 7, 2012 at 4:12 PM, John Fox <jfox@mcmaster.ca> wrote:

> Dear Tal and Rosario,
>
> The bcPower() function in the car package computes Box-Cox power
> transformations; boxcox() in the MASS package estimates the response
> transformation parameter for the Box-Cox regression model (actually the
> profile log-likelihood for a range of variables of the parameter). The two
> functions do different things. The boxCox() function in the car package is
> a
> slight generalization of boxcox(), allowing for other families of
> transformations than the Box-Cox powers; the powerTransform() function in
> the car package is more general still, in that it will handle multivariate
> transformations, both conditional (like the Box-Cox regression model) and
> unconditional.
>
> bcPower() was named box.cox() in earlier versions of the car package,
> associated with the first edition of the R [and S-PLUS] Companion to
> Applied
> Regression. In newer versions of the package, associated with the second
> edition of the book, written with Sandy Weisberg, this and other functions
> have been renamed to remove periods in function names. The older,
> "deprecated," names of the functions are retained as a courtesy to readers
> of the first edition.
>
> Best,
>  John
>
> --------------------------------
> John Fox
> Senator William McMaster
>  Professor of Social Statistics
> Department of Sociology
> McMaster University
> Hamilton, Ontario, Canada
> http://socserv.mcmaster.ca/jfox
>
>
>
> > -----Original Message-----
> > From: r-help-bounces@r-project.org [mailto:r-help-bounces@r-
> > project.org] On Behalf Of Tal Galili
> > Sent: February-07-12 2:50 AM
> > To: Rosario Garcia Gil
> > Cc: r-help@R-project.org
> > Subject: Re: [R] box.cox
> >
> > Use:
> >
> > library(MASS)
> > ?boxcox
> >
> >
> > ----------------Contact
> > Details:-------------------------------------------------------
> > Contact me: Tal.Galili@gmail.com |  972-52-7275845 Read me:
> > www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) | www.r-
> > statistics.com (English)
> > ----------------------------------------------------------------------
> > ------------------------
> >
> >
> >
> >
> > On Tue, Feb 7, 2012 at 8:47 AM, Rosario Garcia Gil
> > <M.Rosario.Garcia@slu.se>wrote:
> >
> > > Hello
> > >
> > > I am using box.cox() and I get this error message:
> > >
> > > Warning message:
> > > 'box.cox' is deprecated.
> > > Use 'bcPower' instead.
> > > See help("Deprecated") and help("car-deprecated").
> > >
> > >
> > > I went to help but I did not understand the explanation, I am still
> > > wondering what is really happening.
> > >
> > > Thanks
> > > /R
> > > ______________________________________________
> > > R-help@r-project.org mailing list
> > > https://stat.ethz.ch/mailman/listinfo/r-help
> > > PLEASE do read the posting guide
> > > http://www.R-project.org/posting-guide.html
> > > and provide commented, minimal, self-contained, reproducible code.
> > >
> >
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> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-
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> > and provide commented, minimal, self-contained, reproducible code.
>
>

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