variogram()

Description:
Calculate empirical variogram estimates.

Usage:
variogram(point.obj, pairs.obj, v1, v2=v1)

Required arguments:
point.obj: a point object generated by point()
pairs.obj: a pairs object generated by pairs()
v1: a variable to plot

Optional arguments:
v2: an optional variable name, if entered cross variograms will be created between v1 and v2

Value:
A variogram object.

Examples:
> stations.v <- variogram(stations, stations.prs, 'inches')
majure