GetPracticalRange {RandomFields} | R Documentation |
the function returns the practical range of a covariance model,
i.e. the distance for which the model with standard parameters
(variance=1
, nugget=0
, scale=1
) values 0.05
GetPracticalRange(model, kappas=NULL)
model |
string; covariance model, see CovarianceFct , or
type PrintModelList() to get all options. |
kappas |
additional parameters of a parametrised model, see
CovarianceFct . |
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
real number (the practical range)
Martin Schlather, martin.schlather@cu.lu http://www.cu.lu/~schlathe
Goovaerts, P. (1997) Geostatistics for Natural Resources Evaluation. New York: Oxford University Press.
CovarianceFct
,
RandomFields
,
RFparameters
,
GetPracticalRange("exponential") GetPracticalRange("whittlematern",kappa=2) GetPracticalRange("gengneiting",kappa=c(a=3,b=5))