post.rpart
PostScript Presentation Plot of an Rpart Object
Description
Generates a PostScript presentation plot of an rpart
object.
Usage
post(tree, ...) ## S3 method for class 'rpart' post(tree, title., filename = paste(deparse(substitute(tree)), ".ps", sep = ""), digits = getOption("digits") - 2, pretty = TRUE, use.n = TRUE, horizontal = TRUE, ...)
Arguments
tree | fitted model object of class |
title. | a title which appears at the top of the plot. By default, the name of the |
filename | ASCII file to contain the output. By default, the name of the file is the name of the object given by |
digits | number of significant digits to include in numerical data. |
pretty | an integer denoting the extent to which factor levels will be abbreviated in the character strings defining the splits; (0) signifies no abbreviation of levels. A |
use.n | Logical. If |
horizontal | Logical. If |
... | other arguments to the |
Details
The plot created uses the functions plot.rpart
and text.rpart
(with the fancy
option). The settings were chosen because they looked good to us, but other options may be better, depending on the rpart
object. Users are encouraged to write their own function containing favorite options.
Side Effects
a plot of rpart
is created using the postscript
driver, or the current device if filename = ""
.
See Also
plot.rpart
, rpart
, text.rpart
, abbreviate
Examples
## Not run: z.auto <- rpart(Mileage ~ Weight, car.test.frame) post(z.auto, file = "") # display tree on active device # now construct postscript version on file "pretty.ps" # with no title post(z.auto, file = "pretty.ps", title = " ") z.hp <- rpart(Mileage ~ Weight + HP, car.test.frame) post(z.hp) ## End(Not run)
Copyright (©) 1999–2012 R Foundation for Statistical Computing.
Licensed under the GNU General Public License.