Geostatistics for S+: Functions

There are currently twelve functions that are defined to carry out operations on point, pairs, variogram, and variogram.model objects. The functions are listed in the table below in the general order in which they are used. For each function, the table lists the function name, the class of the primary input object, the class of the value of the function (i.e., returned value) and a brief description of the operation carried out. Click on a function name in the table to see the documentation for that function and examples.

Function
Name
Class of
input object
Class of
output object
Operation
point data.frame point create an object of class point from a data frame
plot.point point plot the spatial locations, optionally coloring by quantile
identify.point point interactively query a plot of a point object, displaying attribute values
print.point point print descriptive information about an object of class point
pairs point pairs create a pairs structure from an object of class point
print.pairs pairs print descriptive information about an object of class pairs
lagplot point, pairs plot a scatter plot of attribute values at one location versus attriubte values at another location, optionally allowing for interactive query
spacecloud point, pairs plot a variogram cloud plot, optionally allowing for interactive query
spacebox point, pairs plot a boxplot of the variogram cloud plot
variogram point, pairs variogram calculate empirical variogram estimates
plot.variogram variogram plot empirical variogram estimates, optionally plotting a fitted variogram model
fit.exponential variogram variogram.model fit an exponential variogram model to empirical variogram estimates
krige point(2), variogram.model point carry out spatial prediction (on points)


S+ GeoStat Introduction OOPLa Data Structures Functions Download

majure
Updated: 9-Apr-1996