geoR (version 1.0-0)

image.kriging: Image or Perspective Plot with Kriging Results

Description

Plots image or perspective plots with results of the kriging calculations.

Usage

image.kriging(kriging.obj, location = kriging.obj$locations,
              values = kriging.obj$predict, ...)
persp.kriging(kriging.obj, locations=kriging.obj$locations,
              values=kriging.obj$predict, ...)

Arguments

kriging.obj

an object of the class kriging, typically with the output of the functions krige.conv or ksline.

locations

an $n \times 2$ matrix with the coordinates of the prediction locations, which should define a regular grid in order to be plotted by image or persp.

values

a vector with values to be plotted. Defaults to obj$predict.

coords.data

optional. If an $n \times 2$ matrix with the data coordinates is provided, points indicating the data locations are included in the plot.

...

further arguments to be passed to the functions image or persp.

Value

• An image or perspective plot is produced o the current graphics device. No values are returned.

References

Further information about geoR can be found at: http://www.maths.lancs.ac.uk/~ribeiro/geoR.html.

See Also

krige.conv and ksline for kriging calculations. Documentation for image and persp contain basic information on the plotting functions.

Examples

if(is.R()) data(s100) 
loci <- expand.grid(seq(0,1,l=31), seq(0,1,l=31))
kc <- krige.conv(s100, loc=loci,
                 krige=krige.control(cov.pars=c(1, .25)))
par(mfrow=c(1,2))
image.kriging(kc, loc=loci)
image.kriging(kc, loc=loci, val=kc$krige.var)