varobj {vardiag}

Function for variogram fitting

Description

This function fits a variogram model to spatial data and calculates some statistics.

Usage

varobj(m, iter = 50, tolerance = 2e-04, trace = 1, loo = FALSE)

Arguments

m

n by 3 matrix with spatial data

iter

this argument is put forward to the optimization routine

tolerance

this argument is put forward to the optimization routine

trace

if set to values higher than 1 some debug messages are given

loo

if set to TRUE, leave-one-out residuals are clculated

Details

Only spherical variogram models are fitted.

Value

a variogram object

Author(s)

Ernst Glatzer

References

E. Glatzer, W.G. Mueller, 2004. Residual diagnostics for variogram fitting. Computers and Geosciences 30, pp 859-866.

See Also

PlotDiag.varobj

Examples

data(tulln)