L-moments of the Weibull Distribution

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Description

This function estimates the L-moments of the Weibull distribution given the parameters (ζ, β, and δ) from parwei. The Weibull distribution is a reverse Generalized Extreme Value distribution. As result, the Generalized Extreme Value algorithms (lmomgev) are used for computation of the L-moments of the Weibull in this package (see parwei).

Usage

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lmomwei(para)

Arguments

para

The parameters of the distribution.

Value

An R list is returned.

lambdas

Vector of the L-moments. First element is λ_1, second element is λ_2, and so on.

ratios

Vector of the L-moment ratios. Second element is τ, third element is τ_3 and so on.

trim

Level of symmetrical trimming used in the computation, which is 0.

leftrim

Level of left-tail trimming used in the computation, which is NULL.

rightrim

Level of right-tail trimming used in the computation, which is NULL.

source

An attribute identifying the computational source of the L-moments: “lmomwei”.

Author(s)

W.H. Asquith

References

Hosking, J.R.M. and Wallis, J.R., 1997, Regional frequency analysis—An approach based on L-moments: Cambridge University Press.

See Also

parwei, cdfwei, pdfwei, quawei

Examples

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lmr <- lmoms(c(123,34,4,654,37,78))
lmr
lmomwei(parwei(lmr))

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