dskew {gendist} | R Documentation |
Probabilty density function of skewed symmetric model.
Description
Computes pdf of the skewed symmetric model.
Usage
dskew(x, spec1, arg1, spec2, arg2, log = FALSE)
Arguments
x |
scalar or vector of values to compute the pdf. |
spec1 |
a character string specifying the parent distribution |
arg1 |
list of arguments/parameters of the parent distribution |
spec2 |
a character string specifying the parent distribution |
arg2 |
list of arguments/parameters of the parent distribution |
log |
logical; if |
Details
The pdf of skewed symmetric model has a general form of:
f(x) = 2h(x)G(x), \quad -\infty < x < \infty
where h(x)
and G(x)
are the pdf and cdf of parent distributions, respectively.
Value
An object of the same length as x
, giving the pdf values computed at x
.
Author(s)
Shaiful Anuar Abu Bakar
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).
Azzalini, A. (1985). A class of distributions which includes the normal ones. Scandinavian journal of statistics, 171-178.
Examples
x=runif(10, min=0, max=1)
y=dskew(x, spec1="norm", arg1=list(mean=0,sd=1), spec2="logis",
arg2=list(location=0,scale=2) )