isValid_scalar: Check validity of g-and-k or g-and-h parameters
In gk: g-and-k and g-and-h Distribution Functions

isValid_scalar

R Documentation

Check validity of g-and-k or g-and-h parameters

Check whether parameter choices produce a valid g-and-k or g-and-h distribution.

isValid_scalar(
  g,
  k_or_h,
  c = 0.8,
  model = c("gk", "generalised_gh", "tukey_gh", "gh"),
  initial_z = seq(-1, 1, 0.2)
)

`g`	A g parameter.
`k_or_h`	A k or h parameter.
`c`	A c parameter.
`model`	Which model to check: "gk", "generalised_gh" or "tukey_gh". For backwards compatibility, "gh" acts the same as "generalised_gh".
`initial_z`	Vector of initial z values to use in optimisation.