internalldeHelpers: Internal helper functions for treating LDEstimators in...

In RobExtremes: Optimally Robust Estimation for Extreme Value Distributions

Internal helper functions for treating LDEstimators in package distrMod

Description

These functions are used internally by function LDEstimator in package “distrMod”.

Usage

.prepend(prep, list0, dots = NULL)
.LDMatch(x.0, loc.est.0, disp.est.0, loc.fctal.0, disp.fctal.0,
         ParamFamily.0, loc.est.ctrl.0 = NULL, loc.fctal.ctrl.0=NULL,
         disp.est.ctrl.0 = NULL, disp.fctal.ctrl.0=NULL,
         q.lo.0 =0, q.up.0=Inf, log.q.0 =TRUE, ..., vdbg = FALSE)

Arguments

prep	a vector; to be prepended as first argument in a function; named x internally.
list0	a list to be appended to prep; names are taken over.
dots	an optional list (or NULL) to be appended to prep and list0; names are taken over.
x.0	a vector (numeric) at which to evaluate the LD-match
loc.est.0	a function expecting x (a numeric vector) as first argument; location estimator.
disp.est.0	a function expecting x (a numeric vector) as first argument; dispersion estimator; may only take non-negative values.
loc.fctal.0	a function expecting a distribution object as first argument; location functional.
disp.fctal.0	a function expecting a distribution object as first argument; dispersion functional; may only take non-negative values.
loc.est.ctrl.0	a list (or NULL); optional additional arguments for the location estimator.
disp.est.ctrl.0	a list (or NULL); optional additional arguments for the dispersion estimator.
loc.fctal.ctrl.0	a list (or NULL); optional additional arguments for the location functional.
disp.fctal.ctrl.0	a list (or NULL); optional additional arguments for the dispersion functional.
ParamFamily	an object of class "ParamFamily". The parametric family at which to evaluate the LDEstimator; the respective (main) parameter must contain "scale" and "shape".
q.lo.0	numeric; lower bound for search intervall in shape parameter.
q.up.0	numeric; upper bound for search intervall in shape parameter.
log.q.0	logical; shall the zero search be done on log-scale?
...	further arguments to be passed to location estimator and functional and dispersion estimator and functional.
vdbg	logical; if TRUE, debugging information is shown.

Details

.prepend is used to produce the argument list for the calls to estimators and functionals. This argument list consists of prep (first argument), named x internally, the items of list0 and, if non-NULL, the items of ....

.LDMatch performs the matching of location and dispersion functional against empirical values (without any S4-structure).

Value

.prepend	a named list to be used as arguments in a call.
.LDMatch	a named vector with components "shape" and "scale".

Author(s)

Peter Ruckdeschel [e-mail]

See Also

Estimate-class

RobExtremes documentation built on April 12, 2025, 2:31 a.m.