post.causalTree: PostScript Presentation Plot of an Rpart Object

Description Usage Arguments Details Side Effects See Also Examples

Description

Generates a PostScript presentation plot of an causalTree object.

Usage

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post(tree, ...)

## S3 method for class 'causalTree'
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 "causalTree". This is assumed to be the result of some function that produces an object with the same named components as that returned by the causalTree function.

title.

a title which appears at the top of the plot. By default, the name of the causalTree endpoint is printed out.

filename

ASCII file to contain the output. By default, the name of the file is the name of the object given by causalTree (with the suffix .ps added). If filename = "", the plot appears on the current graphical device.

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 NULL signifies using elements of letters to represent the different factor levels. The default (TRUE) indicates the maximum possible abbreviation.

use.n

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

horizontal

Logical. If TRUE (default), plot is horizontal. If FALSE, plot appears as landscape.

...

other arguments to the postscript function.

Details

The plot created uses the functions plot.causalTree and text.causalTree (with the fancy option). The settings were chosen because they looked good to us, but other options may be better, depending on the causalTree object. Users are encouraged to write their own function containing favorite options.

Side Effects

a plot of causalTree is created using the postscript driver, or the current device if filename = "".

See Also

plot.causalTree, causalTree, text.causalTree, abbreviate

Examples

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z.auto <- causalTree(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 <- causalTree(Mileage ~ Weight + HP, car.test.frame)
post(z.hp)

swager/causalForest documentation built on May 30, 2019, 9:32 p.m.