HydroPortailStats (version 1.1.0)

GetUncertainty_ML: Maximum-likelihood estimation of uncertainty

Description

Returns an estimate of the uncertainty around the maximum-likelihood estimate, in the form of a covariance matrix and some simulations from the corresponding Gaussian distribution.

Usage

GetUncertainty_ML(y, dist, par, nsim = nsim_def)

Value

A list with the following components:

cov

numeric matrix npar*npar, covariance matrix.

sim

numeric matrix nsim*npar, simulated parameter replicates.

ok

logical, did computation succeed?

err

integer, error code (0 if ok)

message

error message

Arguments

y

numeric vector, data

dist

character, distribution name

par

numeric vector, estimated parameter (using GetEstimate_ML()).

nsim

integer, number of simulated parameter replicates.

Examples

y=c(9.2,9.5,11.4,9.5,9.4,9.6,10.5,11.1,10.5,10.4)
estim=GetEstimate_ML(y,'Gumbel',par0=GetEstimate_ROUGH(y,'Gumbel')$par)
GetUncertainty_ML(y,'Gumbel',par=estim$par)