poolSDTransform is a transformations that can be applied to a matrix of data. The resulting matrix has the column- standard deviations equal to the pool standard deviations of the individual columns, the solution adopted by lm94superb.
poolSDTransform(dta, variables)a data.frame containing the data in wide format;
a vector of column names on which the transformation will be applied. the remaining columns will be left unchanged
a data.frame of the same form as dta with the variables transformed.