geoR: lines.variomodel.grf – R documentation

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lines.variomodel.grf

Lines with True Variogram for Simulated Data

Description

This functions adds to the graphics device a line with the theoretical (true) variogram used when generating simulations with the function grf.

Usage

## S3 method for class 'grf'
lines.variomodel(x, max.dist, n = 100, ...)

Arguments

`x`	an object from the class `grf` typically an output of the function `grf`.
`max.dist`	maximum distance to compute and plot the true variogram. Defaults to the maximum distance between two data locations.
`n`	number of points used to compute and draw the variogram line.
`...`	further arguments to be passed to the function `curve`.

Value

A line with the true variogram model is added to the current plot on the graphics device. No values are returned.

Author(s)

Paulo J. Ribeiro Jr. paulojus@leg.ufpr.br,
Peter J. Diggle p.diggle@lancaster.ac.uk.

References

Further information on the package geoR can be found at:
http://www.leg.ufpr.br/geoR.

Examples

sim <- grf(100, cov.pars=c(1, .25)) # simulates data
plot(variog(sim, max.dist=1))       # plot empirical variogram

geoR

Analysis of Geostatistical Data

v1.8-1

GPL (>= 2)

Authors

Paulo J. Ribeiro Jr [aut, cre] <paulojus@ufpr.br>, Peter J. Diggle [aut, cre] <p.diggle@lancaster.ac.uk> Ole Christensen [ctb], Martin Schlather [ctb], Roger Bivand [ctb], Brian Ripley [ctb]

Initial release

2020-02-08