gstat (version 0.9-11)

plot.variogram.cloud: Plot and Identify Data Pairs on Sample Variogram Cloud

Description

Plot a sample variogram cloud, possibly with identification of individual point pairs

Usage

plot.variogram.cloud(x, identify = FALSE, digitize = FALSE, xlim, ylim, xlab, ylab, ...)

Arguments

x

object of class variogram.cloud

identify

logical; if TRUE, the plot allows identification of a series of individual point pairs that correspond to individual variogram cloud points (use left mouse button to select; right mouse button ends)

digitize

logical; if TRUE, select point pairs by digitizing a region with the mouse (left mouse button adds a point, right mouse button ends)

xlim

limits of x-axis

ylim

limits of y-axis

xlab

x axis label

ylab

y axis label

...

parameters that are passed through to plot.variogram (in case of identify = FALSE) or to plot (in case of identify = TRUE)

Value

• if identify or digitize is TRUE, a data frame of class point.pairs with in its rows the point pairs identified (pairs of row numbers in the original data set); if identify is F, a plot of the variogram cloud, which uses plot.variogram

References

http://www.gstat.org/

See Also

variogram.formula, variogram, plot.variogram, plot.point.pairs, identify, locator

Examples

data(meuse)
# no trend:
plot(variogram(log(zinc)~1, loc=~x+y, data=meuse, cloud=TRUE))
## commands that require interaction:
# x <- variogram(log(zinc)~1, loc=~x+y, data=meuse, cloud=TRUE)
# plot(plot(x, idendify = TRUE), meuse)
# plot(plot(x, digitize = TRUE), meuse)