gendist (version 2.0)

pfolded: Cumulative distribution function of folded model.

Description

Computes cdf of the folded model.

Usage

pfolded(q, spec, arg, lower.tail = TRUE, log.p = FALSE)

Arguments

q

scale or vector of values to compute the cdf.

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.

lower.tail

logical; if TRUE, cdf are returned, otherwise 1-cdf.

log.p

logical; if TRUE, probabilities returned are given as log(cdf).

Value

An object of the same length as q, giving the cdf values computed at q.

Details

The cdf of folded model has a general form of: $$ F(x) = G(x) - G(-x) \quad x>0 $$ where \(G(x)\) is the cdf of parent distribution.

References

Abu Bakar, S. A., Nadarajah, S., Adzhar, Z. A. A. K., & Mohamed, I. (2016). gendist: An R package for generated probability distribution models. PloS one, 11(6). 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

# NOT RUN {
x=runif(10, min=0, max=1)
y=pfolded(x, spec="norm", arg=list(mean=1,sd=2) )

# }