text.rpart {rpart} | R Documentation |
Labels the current plot of the tree dendrogram with text.
text.rpart(x, splits=T, label="yval", FUN=text, all=F, pretty=NULL, digits=.Options$digits - 3, use.n=F, fancy=F, fwidth=0.8, fheight=0.8, ...)
x |
fitted model object of class rpart . This is assumed to be the result
of some function that produces an object with the same named
components as that returned by the rpart function.
|
splits |
logical flag. If TRUE (default), then the splits in the tree are
labeled with the criterion for the split.
|
label |
a column name of x$frame ; values of this will label the nodes.
|
FUN |
the name of a labeling function, e.g. text .
|
all |
Logical. If TRUE , all nodes are labeled, otherwise just terminal nodes.
|
pretty |
an integer denoting the extent to which factor levels in split labels
will be abbreviated. A value of (0) signifies no abbreviation. A
NULL , the default, signifies using elements of letters to represent
the different factor levels.
|
digits |
number of significant digits to include in numerical labels. |
use.n |
Logical. If TRUE (default), 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 = .8). If
fwidth > 1 then it representes 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 = .8). If
fheight > 1 then it represents the number of character heights
(for current graphical device) to use.
|
... |
Graphical parameters may also be supplied as arguments to this
function (see par ).
|
the current plot of a tree dendrogram is labeled.
text
, plot.rpart
, rpart
,
post.rpart
, abbreviate
data(freeny) freen.tr <- rpart(y ~ ., freeny) plot(freen.tr) text(freen.tr, use.n=T, all=T)