plot.grf {geoR} | R Documentation

## Plots Variograms for Simulated Data

### Description

This function plots variograms for simulated geostatistical data generated by the function `grf`.

### Usage

    ## S3 method for class 'grf':
    plot(x, model.line = TRUE, plot.locations = FALSE, ...)

### Arguments

`x` | an object of the class `grf`, typically an output of the function `grf`.
`model.line` | logical. If `TRUE` the true variogram model is added to the plot with the sample variogram(s).
`plot.locations` | logical. If `TRUE` a plot with data locations is also shown.
`...` | further arguments to be passed to the functions `variog` and `plot`.

### Value

A plot with the empirical variogram(s) is produced on the output device. No values are returned.

### Author(s)

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

### References

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

### See Also

`grf` for simulation of Gaussian random fields, `plot.variogram` for plotting empirical variogram, `variog` for computation of empirical variograms and `plot` for the generic plotting function.

### Examples

    op <- par(no.readonly = TRUE)
    par(mfrow=c(2,1))
    sim1 <- grf(100, cov.pars=c(10, .25))
    # generates simulated data
    plot(sim1, plot.locations = TRUE)
    #
    # plots the locations and the sample true variogram model
    #
    par(mfrow=c(1,1))
    sim2 <- grf(100, cov.pars=c(10, .25), nsim=10)
    # generates 10 simulated data
    plot(sim1)
    # plots sample variograms for all simulations with the true model
    par(op)

[Package geoR version 1.5-7 Index]