PostScript Presentation Plot of an Rpart Object
Generates a PostScript presentation plot of an rpart object.
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, ...)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 |
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.
a plot of rpart is created using the postscript driver, or
the current device if filename = "".
## 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)
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