Derivative of the Box-Cox transformation function.
Usage
boxcox.deriv(x, lambda)
Arguments
x
a numeric vector or scalar
lambda
Box-Cox transformation variable.
Value
A vector or scalar of the derivative of the Box-Cox function evaluated at x.
References
Box, George EP, and David R. Cox. "An analysis of transformations." Journal of the Royal Statistical Society. Series B (Methodological) (1964): 211-252.