boxcoxTransform: Box-Cox transformation of data - Only intended for developer...
In envoutliers: Methods for Identification of Outliers in Environmental Data

Description Usage Arguments Details Value References

Performs Box-Cox power transformation of the data. The optimal value of power parameter is selected based on profile log-likelihoods. The function is called by KRDetect.outliers.changepoint and is not intended for use by regular users of the package.

1	boxcoxTransform(x)

`x`	a numeric vector of data values.

This function computes the Box-Cox power transformation of the data. The function is exported for developer use only. It does not perform any checks on inputs since it is only a convenience function for a transformation of data to normality. The optimal value of a power parameter is estimated based on profile log-likelihoods calculated using boxcox function implemented in MASS package.

A list is returned with elements:

`lambda`	a numeric value giving power parameter
`x`	a numeric vector of data values
`x.transformed`	a numeric vector of transformed data

Box G, Cox D (1964). An analysis of transformations. Journal of the Royal Statistical Society: Series B, 26, 211–234.

Venables WN, Ripley BD (2002). Modern Applied Statistics with S. New York, fourth edition. ISBN 0-387-95457-0, URL http://www.stats.ox.ac.uk/pub/MASS4.

envoutliers documentation built on July 2, 2020, 3:25 a.m.