dot-rxTransform function

rxode2 general transformation function

.rxTransform(
  x,
  lambda = 1,
  low = 0,
  high = 1,
  transform = c("boxCox", "yeoJohnson", "untransformed", "lnorm", "logit",
    "logit + yeoJohnson", "probit", "probit + yeoJohnson", "logit + boxCox",
    "probit + boxCox"),
  inverse = FALSE
)

Arguments

• x: value that will be transformed
• lambda: lambda value for the transformation
• low: lower bound for the transformation
• high: upper bound for the transformation
• transform: transformation to use (can be integer or string matching supported transformations)
• inverse: boolean if the inverse transformation should be performed

Returns

transformed value

Examples

logit(0.25)

.rxTransform(0.25, transform="logit")

expit(-1.09)

.rxTransform(-1.09, transform="logit", inverse=TRUE)

Author(s)

Matthew L. Fidler