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Test if a fitted fevd object is stationary or not.
fevd
is.fixedfevd(x)check.constant(x)
check.constant(x)
logical of length one stating whether the fitted model is stationary (TRUE) or not (FALSE).
A list object of class “fevd” as returned by fevd.
For check.constant, this may be a formula or vector.
check.constant
Eric Gilleland
This function is mostly intended as an internal function, but it may be useful generally.
check.constant determines if a formula is given simply by ~ 1. It is used by is.fixedfevd.
is.fixedfevd
z <- revd(100, loc=20, scale=0.5, shape=-0.2) fit <- fevd(z) fit is.fixedfevd(fit)
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