[R] data transformation ----Box-Cox Transformations

[John Fox]

Dear Stuart,

See ?bcPower and ?powerTransform in the car package, the latter for
univariate and multivariate conditional and unconditional ML Box-Cox.

I hope this helps,
 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 at r-project.org [mailto:r-help-bounces at r-project.org]
> On Behalf Of Stuart
> Sent: May-03-11 11:37 AM
> To: r-help at r-project.org
> Subject: [R] data transformation ----Box-Cox Transformations
> 
> Hi
> 
> Could any one please help how I can trnasform data based on Box-Cox
> Transformations. I have massive data set with many variables. If
> possible someone can write few lines so I can read in all data set once
> and transform it.
> 
> 
> g1	g2	g2
> 97.03703704	89.25925926	4.444444444
> 24.90740741	69.25925926	35.55555556
> 62.22222222	85.18518519	36.85185185
> 18.51851852	84.25925926	21.66666667
> 93.7037037	95.92592593	54.07407407
> 26.66666667	23.33333333	99.25925926
> 63.33333333	97.03703704	27.40740741
> 95.74074074	3.611111111	59.25925926
> 46.66666667	49.44444444	39.16666667
> 21.85185185	2.592592593	63.14814815
> 94.72222222	17.77777778	81.11111111
> 
> 
> any help will be much appreciated
> 
> Cheers
> Sbroad
> 
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