| image.kriging {geoR} | R Documentation |
Plots image or perspective plots with results of the kriging calculations.
image.kriging(obj, locations, borders, values = obj$predict,
coords.data, ...)
persp.kriging(obj, locations, borders, values = obj$predict, ...)
obj |
an object of the class kriging, typically
with the output of the functions krige.conv or ksline. |
locations |
an n x 2 matrix with the
coordinates of the prediction locations, which should define a
regular grid
in order to be plotted by image or persp. |
borders |
an n x 2 matrix with the
coordinates defining the borders of a region inside the grid defined
by locations. Elements in the
argument values are assigned to locations internal to the
borders and NA's to the external ones.
|
values |
a vector with values to be plotted. Defaults to obj$predict. |
coords.data |
optional. If an n x 2 matrix with the data coordinates is provided, points indicating the data locations are included in the plot. |
... |
further arguments to be passed to the functions
image or persp. |
An image or perspective plot is produced o the current graphics device. No values are returned.
Paulo J. Ribeiro Jr. Paulo.Ribeiro@est.ufpr.br,
Peter J. Diggle p.diggle@lancaster.ac.uk.
Further information about geoR can be found at:
http://www.maths.lancs.ac.uk/~ribeiro/geoR.html.
krige.conv and ksline for kriging
calculations. Documentation for
image and persp contain basic information
on the plotting functions.
if(is.R()) data(s100)
loci <- expand.grid(seq(0,1,l=31), seq(0,1,l=31))
kc <- krige.conv(s100, loc=loci,
krige=krige.control(cov.pars=c(1, .25)))
par(mfrow=c(1,2))
image.kriging(kc, loc=loci)
image.kriging(kc, loc=loci, val=kc$krige.var)