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Last data update: 2014.03.03

R: Quantile function of folded model.

qfolded

R Documentation

Quantile function of folded model.

Description

Computes cdf of the folded model.

Usage

qfolded(p, spec, arg, interval = c(0, 100), lower.tail = TRUE, log.p = FALSE)

Arguments

`p`	scalar or vector of probabilities to compute the qf.
`spec`	a character string specifying the parent distribution (for example, "norm" if the parent distribution correspond to the normal).
`arg`	list of arguments/parameters of the parent distribution.
`interval`	a vector of interval end-points for `p` to search for the function root.
`lower.tail`	logical; if `TRUE`, probabilities are `p`, otherwise 1-`p`.
`log.p`	logical; if `TRUE`, probabilities `p` are returned as log(`p`).

Value

An object of the same length as p, giving the qf values computed at p.

References

S.A. Abu Bakar, S. Nadarajah, Z.A. ABSL Kamarul Adzhar, I. Mohamed. gendist: An R package for generated probability distribution models, submitted.
Brazauskas, V., & Kleefeld, A. (2011). Folded and log-folded-t distributions as models for insurance loss data. Scandinavian Actuarial Journal, 2011(1), 59-74.

Examples

x=runif(10, min=0, max=1)
y=qfolded(x, spec="norm", arg=list(mean=1,sd=2), interval=c(0,100) )