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lmomco (version 2.2.5)

lmom2par: Convert L-moments to the Parameters of a Distribution

Description

This function converts L-moments to the parameters of a distribution. The type of distribution is specified in the argument list: aep4, cau, emu, exp, gam, gep, gev, gld, glo, gno, gov, gpa, gum, kap, kmu, kur, lap, lmrq, ln3, nor, pe3, ray, revgum, rice, sla, st3, texp, wak, or wei.

Usage

lmom2par(lmom, type, ...)
lmr2par(x, type, ...)

Arguments

lmom
An L-moment object such as that returned by lmoms or pwm2lmom.
type
Three character (minimum) distribution type (for example, type="gev").
...
Additional arguments for the parCCC functions.
x
In the lmr2par call the L-moments are computed from the $x$ values. This function is a parallel to mle2par and mps2par.

Value

An R list is returned. This list should contain at least the following items, but some distributions such as the revgum have extra.

See Also

par2lmom

Examples

Run this code
lmr  <- lmoms(rnorm(20))
para <- lmom2par(lmr,type="nor")

# The lmom2par() calls will error if trim != 1.
X <- rcauchy(20)
cauchy <- lmom2par(TLmoms(X, trim=1), type="cau")
slash  <- lmom2par(TLmoms(X, trim=1), type="sla")
## Not run: 
# plot(pp(X), sort(X), xlab="PROBABILITY", ylab="CAUCHY")
# lines(nonexceeds(), par2qua(nonexceeds(), cauchy))
# lines(nonexceeds(), par2qua(nonexceeds(), slash), col=2)
# ## End(Not run)

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