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Revision c751cbeafa6661ec449a5a53a8b3e659f558be70 authored by Martin Schlather on 27 May 2005, 00:00:00 UTC, committed by Gabor Csardi on 27 May 2005, 00:00:00 UTC
1 parent 7669be7
GetPracticalRange.Rd
\name{GetPracticalRange}
\alias{GetPracticalRange}
\alias{PracticalRange}
\title{Determination of the practical range}
\description{
the function returns the practical range of a covariance model,
i.e. the distance for which the model with standard parameters
(\code{variance=1}, \code{nugget=0}, \code{scale=1}) values 0.05
}
\usage{
GetPracticalRange(model, kappas=NULL)
}
\arguments{
\item{model}{string; covariance model, see \command{\link{CovarianceFct}}, or
type \command{\link{PrintModelList}}\code{()} to get all options.}
\item{kappas}{additional parameters of a parametrised model, see
}
\details{
In case the practical range has to be determined numerically, only a
rough approximation is provided.

The function can only be applied to isotropic models
}
\value{
real number (the practical range)
}
\references{
Goovaerts, P. (1997) \emph{Geostatistics for Natural Resources
Evaluation.} New York: Oxford University Press.
}
\author{Martin Schlather, \email{schlath@hsu-hh.de}
\url{http://www.unibw-hamburg.de/WWEB/math/schlath/schlather.html}}