text.rpart {rpart}  R Documentation 
Place Text on a Dendrogram Plot
Description
Labels the current plot of the tree dendrogram with text.
Usage
## S3 method for class 'rpart'
text(x, splits = TRUE, label, FUN = text, all = FALSE,
pretty = NULL, digits = getOption("digits")  3, use.n = FALSE,
fancy = FALSE, fwidth = 0.8, fheight = 0.8, bg = par("bg"),
minlength = 1L, ...)
Arguments
x 
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.

splits 
logical flag. If TRUE (default), then the splits in the tree are
labeled with the criterion for the split.

label 
For compatibility with rpart2 , ignored in this version (with
a warning).

FUN 
the name of a labeling function, e.g. text .

all 
Logical. If TRUE , all nodes are labeled, otherwise just
terminal nodes.

minlength 
the length to use for factor labels. A value of 1 causes them to be
printed as ‘a’, ‘b’, .....
Larger values use abbreviations of the label names.
See the labels.rpart function for details.

pretty 
an alternative to the minlength argument, see
labels.rpart .

digits 
number of significant digits to include in numerical labels.

use.n 
Logical. If TRUE , adds to label
(\#events level1/ \#events level2/etc. for class ,
n for anova , and \#events/n for poisson and exp ).

fancy 
Logical. If TRUE , nodes are represented by ellipses (interior nodes)
and rectangles (leaves) and labeled by yval . The edges connecting the
nodes are labeled by left and right splits.

fwidth 
Relates to option fancy and the width of the ellipses and rectangles.
If fwidth < 1 then it is a scaling factor (default = 0.8). If
fwidth > 1 then it represents the number of character widths
(for current graphical device) to use.

fheight 
Relates to option fancy and the height of the ellipses and rectangles.
If fheight <1 then it is a scaling factor (default = 0.8). If
fheight > 1 then it represents the number of character heights
(for current graphical device) to use.

bg 
The color used to paint the background to annotations if fancy = TRUE .

... 
Graphical parameters may also be supplied as arguments to this
function (see par ). As labels often extend outside the plot
region it can be helpful to specify xpd = TRUE .

Side Effects
the current plot of a tree dendrogram is labeled.
See Also
text
, plot.rpart
, rpart
,
labels.rpart
, abbreviate
Examples
freen.tr < rpart(y ~ ., freeny)
par(xpd = TRUE)
plot(freen.tr)
text(freen.tr, use.n = TRUE, all = TRUE)
[Package
rpart version 4.115
Index]