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boxcox(x,power), x a REAL vector or matrix, power a REAL scalar

Keywords: transformations
boxcox(var,Pow) computes the Box-Cox transformation of the data in
vector or matrix var.  When var is a matrix, the transformation is
applied to each column separately.  If GM is the geometric mean of the
values in a vector, boxcox(y,Pow) computes (y^Pow-1)/(Pow*(GM)^(Pow-1))
when Pow != 0, and GM*log(y) when Pow == 0.  Boxcox is implemented as a

See also topics 'macros' and 'transformations'.

Gary Oehlert 2003-01-15