hscat {gstat}

Produce h-scatterplot

Description

Produces h-scatterplots, where point pairs having specific separation distances are plotted. This function is a wrapper around xyplot.

Usage

hscat(formula, data, breaks, pch = 3, cex = .6, mirror = FALSE, 
	variogram.alpha = 0, as.table = TRUE,...)

Arguments

formula

specifies the dependent variable

data

data where the variable in formula is resolved

breaks

distance class boundaries

pch

plotting symbol

cex

plotting symbol size

mirror

logical; duplicate all points mirrored along x=y? (note that correlations are those of the points plotted)

variogram.alpha

parameter to be passed as alpha parameter to variogram; if alpha is specified it will only affect xyplot by being passed through ...

as.table

logical; if TRUE, panels plot top-to-bottom

...

parameters, passed to variogram and xyplot

Value

an object of class trellis; normally the h scatter plot

Note

Data pairs are plotted once, so the h-scatterplot are not symmetric.

Author(s)

Edzer Pebesma

References

http://www.gstat.org/

Pebesma, E.J., 2004. Multivariable geostatistics in S: the gstat package. Computers and Geosciences, 30: 683-691.

Examples

library(sp)
data(meuse)
coordinates(meuse) = ~x+y
hscat(log(zinc)~1, meuse, c(0, 80, 120, 250, 500, 1000))