spatial (version 7.3-5)

anova.trls: Anova tables for fitted trend surface objects

Description

Compute analysis of variance tables for one or more fitted trend surface model objects; where anova.trls is called with multiple objects, it passes on the arguments to anovalist.trls.

Usage

## S3 method for class 'trls':
anova(object, \dots)
anovalist.trls(object, ...)

Arguments

object

A fitted trend surface model object from surf.ls

...

Further objects of the same kind

Value

• anova.trls and anovalist.trls return objects corresponding to their printed tabular output.

References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.

See Also

surf.ls

Examples

library(stats)
data(topo, package="MASS")
topo0 <- surf.ls(0, topo)
topo1 <- surf.ls(1, topo)
topo2 <- surf.ls(2, topo)
topo3 <- surf.ls(3, topo)
topo4 <- surf.ls(4, topo)
anova(topo0, topo1, topo2, topo3, topo4)
summary(topo4)