parwei | R Documentation |
This function estimates the parameters of the Weibull distribution given the L-moments of the data in an L-moment object such as that returned by lmoms
. The Weibull distribution is a reverse Generalized Extreme Value distribution. As result, the Generalized Extreme Value algorithms are used for implementation of the Weibull in this package. The relations between the Generalized Extreme Value parameters (\xi
, \alpha
, and \kappa
) and the Weibull parameters are
\kappa = 1/\delta \mbox{,}
\alpha = \beta/\delta \mbox{, and}
\xi = \zeta - \beta \mbox{.}
These relations are taken from Hosking and Wallis (1997). The relations between the distribution parameters and L-moments are seen under lmomgev
.
parwei(lmom,checklmom=TRUE, ...)
lmom |
An L-moment object created by |
checklmom |
Should the |
... |
Other arguments to pass. |
An R list
is returned.
type |
The type of distribution: |
para |
The parameters of the distribution. |
source |
The source of the parameters: “parwei”. |
W.H. Asquith
Hosking, J.R.M., and Wallis, J.R., 1997, Regional frequency analysis—An approach based on L-moments: Cambridge University Press.
lmomwei
,
cdfwei
, pdfwei
, quawei
parwei(lmoms(rnorm(20)))
## Not run:
str(parwei(lmoms(rweibull(3000,1.3, scale=340)-1200))) #
## End(Not run)
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