labels.rpart {rpart} | R Documentation |
Create Split Labels For an Rpart Object
Description
This function provides labels for the branches of an rpart
tree.
Usage
## S3 method for class 'rpart'
labels(object, digits = 4, minlength = 1L, pretty, collapse = TRUE, ...)
Arguments
object |
fitted model object of class "rpart" . This is assumed to be the
result of some function that produces an object with the same named
components as that returned by the rpart function.
|
digits |
the number of digits to be used for numeric values.
All of the rpart functions that call labels
explicitly set this value, with options("digits")
as the default.
|
minlength |
the minimum length for abbreviation of character or factor variables.
If 0 no abbreviation is done; if 1 single English letters are
used, first lower case than upper case (with a maximum of 52
levels). If the value is greater than , the abbreviate
function is used, passed the minlength argument.
|
pretty |
an argument included for compatibility with the original Splus tree package:
pretty = 0 implies minlength = 0L ,
pretty = NULL implies minlength = 1L , and
pretty = TRUE implies minlength = 4L .
|
collapse |
logical. The returned set of labels is always of the same length as
the number of nodes in the tree.
If collapse = TRUE (default),
the returned value is a vector of labels for the branch leading into
each node, with "root" as the label for the top node.
If FALSE , the returned value is a two
column matrix of labels for the left and right branches leading
out from each node, with "leaf" as the branch labels for terminal
nodes.
|
... |
optional arguments to abbreviate .
|
Value
Vector of split labels (collapse = TRUE
) or matrix of left and
right splits (collapse = FALSE
) for the supplied rpart
object. This function is called by printing methods for rpart
and is not intended to be called directly by the users.
See Also
abbreviate
[Package
rpart version 4.1.23
Index]