Plot a Tree Sequence
Usage
plot.tree.sequence(x, ..., order=c("increasing", "decreasing"))
Arguments
x
|
object of class tree.sequence .
This is assumed to be the result of some function that produces
an object with the same named components (size , deviance , k )
as that returned by prune.tree() and shrink.tree() .
|
order
|
of size on the plot. Use "decreasing" for the natural ordering of k
and the amount of pruning. Only the first character is needed.
|
Description
Allows the user to plot a tree sequence.Details
This function is a method for the generic function
plot()
for class tree.sequence
.
It can be invoked by calling plot(x)
for an
object x
of the appropriate class, or directly by
calling plot.tree.sequence(x)
regardless of the
class of the object.Side Effects
plots deviance or number of misclassifications (or total loss)
versus size for a sequence of trees.See Also
plot.tree
.Examples
zp <- prune.tree(z)
plot(zp, type="s")
zs <- shrink.tree(z)
lines(zs$size, zs$dev)