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

Greg Snow Greg.Snow at imail.org
Tue May 3 19:33:55 CEST 2011


There is the bct function in the TeachingDemos package that does Box-Cox transforms (though you could also write your own fairly simply).  The lappy/sapply functions will apply a function to each column of a data frame.

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Stuart
> Sent: Tuesday, May 03, 2011 9:37 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
> 
> ______________________________________________
> R-help at 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.



More information about the R-help mailing list