plot.pointPairs: Plot a point pairs, identified from a variogram cloud

Description

Plot a point pairs, identified from a variogram cloud

Usage

# S3 method for pointPairs
plot(x, data, xcol = data$x, ycol = data$y, xlab = "x coordinate", 
ylab = "y coordinate", col.line = 2, line.pch = 0, main = "selected point pairs", ...)

Arguments

object of class "pointPairs", obtained from the function plot.variogramCloud, containing point pair indices

data

data frame to which the indices refer (from which the variogram cloud was calculated)

xcol

numeric vector with x-coordinates of data

ycol

numeric vector with y-coordinates of data

xlab

x-axis label

ylab

y-axis label

col.line

color for lines connecting points

line.pch

if non-zero, symbols are also plotted at the middle of line segments, to mark lines too short to be visible on the plot; the color used is col.line; the value passed to this argument will be used as plotting symbol (pch)

main

title of plot

...

arguments, further passed to xyplot

Value

plots the data locations, with lines connecting the point pairs identified (and refered to by indices in) x

References

http://www.gstat.org

Examples

Run this code

# NOT RUN {
### The following requires interaction, and is therefore outcommented
#data(meuse)
#coordinates(meuse) = ~x+y
#vgm1 <- variogram(log(zinc)~1, meuse, cloud = TRUE)
#pp <- plot(vgm1, id = TRUE)
### Identify the point pairs
#plot(pp, data = meuse) # meuse has x and y as coordinates
# }