prp {rpart.plot} | R Documentation |
rpart
model. A superset of rpart.plot
.Plot an rpart
model.
The arguments of this function are a superset of those of rpart.plot
.
See ../doc/prp.pdf for an overview.
prp(x=stop("no 'x' arg"), type=0, extra=0, under=FALSE, clip.right.labs=TRUE, nn=FALSE, ni=FALSE, yesno=TRUE, fallen.leaves=FALSE, branch=if(fallen.leaves) 1 else .2, uniform=TRUE, left=TRUE, xflip=FALSE, yflip=FALSE, Margin=0, space=1, gap=NULL, digits=2, varlen=-8, faclen=3, cex=NULL, tweak=1, compress=TRUE, ycompress=uniform, trace=FALSE, snip=FALSE, snip.fun=NULL, box.col=0, border.col=col, round=NULL, leaf.round=NULL, shadow.col=0, prefix="", suffix="", xsep=NULL, under.font=font, under.col=1, under.cex=.8, split.cex=1, split.font=2, split.family=family, split.col=1, split.box.col=0, split.border.col=0, split.lty=1, split.lwd=NULL, split.round=0, split.shadow.col=0, split.prefix="", right.split.prefix=NULL, split.suffix="", right.split.suffix=NULL, facsep=",", eq=" = ", lt=" < ", ge=" >= ", branch.col=if(identical(branch.type, 0)) 1 else "gray", branch.lty=1, branch.lwd=NULL, branch.type=0, branch.tweak=1, min.branch.width=.002, branch.fill=branch.col, nn.cex=NULL, nn.font=3, nn.family="", nn.col=1, nn.box.col=0, nn.border.col=nn.col, nn.lty=1, nn.lwd=NULL, nn.round=.3, node.fun=internal.node.labs, split.fun=internal.split.labs, FUN=text, nspace=branch, minbranch=.3, do.par=TRUE, add.labs=TRUE, clip.left.labs=FALSE, fam.main="", yshift=0, yspace=space, shadow.offset=.4, split.adj=NULL, split.yshift=0, split.space=space, split.yspace=yspace, split.shadow.offset=shadow.offset, nn.adj=.5, nn.yshift=0, nn.space=.8, nn.yspace=.5, ygap=gap/2, under.ygap=.5, yesno.yshift=0, xcompact=TRUE, ycompact=uniform, xcompact.ratio=.8, min.inter.height=4, max.auto.cex=1, min.auto.cex=.15, ycompress.cex=.7, accept.cex=1.1, shift.amounts=c(1.5, 2), Fallen.yspace=.1, boxes.include.gap=FALSE, ...)
x |
An |
type |
Type of plot. Five possibilities:
|
extra |
Display extra information at the nodes. Possible values:
Note 1: Unlike |
under |
Applies only if |
clip.right.labs |
Default is |
nn |
Display the node numbers.
Default |
ni |
Display the node indices,
i.e. the row numbers of the nodes in the object's |
yesno |
Default |
fallen.leaves |
Default |
branch |
Controls the shape of the branch lines.
Specify a value between |
uniform |
If |
left |
Default |
xflip |
Default |
yflip |
Default |
Margin |
Extra white space around the tree, as a fraction of the graph width.
Default |
gap |
Minimum horizontal gap between the (possibly invisible) boxes, in character widths.
Default |
digits |
The number of significant digits in displayed numbers.
Default |
varlen |
Length of variable names in text at the splits
(and, for class responses, the class in the node label).
Default |
faclen |
Length of factor level names in splits.
Default |
cex |
Default |
tweak |
Adjust the (possibly automatically calculated) |
compress |
If |
ycompress |
If |
trace |
Default |
snip |
Default |
snip.fun |
Function invoked after each mouse click when The following control the node labels. |
box.col |
Color of the boxes around the text.
Default |
border.col |
Color of the box border around the text.
Default |
round |
Controls the rounding of the corners of the node boxes.
Default |
leaf.round |
Controls the rounding of the corners of the leaf node boxes.
Default |
shadow.col |
Color of the shadow under the boxes.
Default |
prefix |
Default |
suffix |
Default |
xsep |
String which separates the individual counts and probabilities
in node labels when The following control the text under the boxes (apply only if
|
under.font |
Font of the text under the box. Default |
under.col |
Color of the text under the box.
Default |
under.cex |
Size of the text under the box relative to the text in the box.
Default The following control the split labels. |
split.cex |
Size of the split text relative to |
split.font |
Font for the split labels.
Default |
split.family |
Font family for the split labels.
Default |
split.col |
Color of the split label text.
Default |
split.box.col |
Color of the split boxes.
Default |
split.border.col |
Color of the split box borders.
Default |
split.lty |
Line type for the split box borders.
The default is |
split.lwd |
Line width of the split box border relative to |
split.round |
Controls the rounding of the corners of the split boxes.
Default |
split.shadow.col |
Color of the shadow under the split boxes.
Default |
split.prefix |
Default |
right.split.prefix |
Default |
split.suffix |
Default |
right.split.suffix |
Default |
facsep |
Default |
eq |
Default |
lt |
Default |
ge |
Default The following control the branches. |
branch.col |
Color of the branch lines.
Default |
branch.lty |
Branch line type.
Default |
branch.lwd |
Line width of the branch lines relative to |
branch.type |
Default
Otherwise set Note: with a nonzero |
branch.tweak |
Default |
min.branch.width |
Default |
branch.fill |
Color used to fill the wide branch lines.
Applies only if The following control the node numbers (with |
nn.cex |
Default |
nn.font |
Font for the node numbers.
Default |
nn.family |
Font family for the node numbers.
Default |
nn.col |
Color of the node number text.
Default |
nn.box.col |
Color of the boxes around the node numbers.
Default |
nn.border.col |
Color of the box border around the node numbers.
Default |
nn.lty |
Line type of the node number box border.
Default |
nn.lwd |
Line width of the node box border relative to |
nn.round |
Controls the rounding of the corners of the node number boxes.
Default The following are user definable functions. |
node.fun |
The function that generates the text at the node labels.
The default is |
split.fun |
The function that generates the text at the splits.
Default |
FUN |
The function that displays the text on the screen.
Default The following are esoteric parameters, mostly for the graph layout engine. |
nspace |
Applies only when |
minbranch |
Applies only when |
do.par |
Default |
add.labs |
Default |
clip.left.labs |
Like |
fam.main |
Font family for the main text. Default |
yshift |
Vertical position of the labels, in character heights relative to their default position.
Default |
space |
Horizontal space to the box border on each side of the node label text,
in character widths.
Default |
yspace |
Vertical space to the box border above and below the node label text, in character heights.
Default |
shadow.offset |
Offset of the shadow from the boxes, in character widths.
Default |
split.adj |
Horizontal position of the split text.
In string width units, as is the convention for |
split.yshift |
Vertical position of the split labels,
in character heights relative to their default positions.
Default |
split.space |
Horizontal space between the split label text and the box,
in character widths.
Default |
split.yspace |
Vertical space between the split label text and the box, in character heights.
Default |
split.shadow.offset |
Offset of the shadow from the split boxes, in character widths.
Default |
nn.adj |
Horizontal position of the node label text.
Default |
nn.yshift |
Vertical position of the node numbers, in character heights relative to their default positions.
Default |
nn.space |
Horizontal space to the box border on each side of the node number text,
in character widths.
Default |
nn.yspace |
Vertical space to the box border above and below the node number text, in character heights.
Default |
under.ygap |
Applies if text is plotted under the box
(i.e. if |
yesno.yshift |
Vertical position of "yes" and "no"
in character heights relative to their default position.
Default |
ygap |
Minimum vertical gap between boxes, in character heights.
Default |
xcompact |
If |
ycompact |
If |
xcompact.ratio |
Default |
min.inter.height |
Default |
max.auto.cex |
Clamp the maximum automatically calculated |
min.auto.cex |
Default |
ycompress.cex |
Default |
accept.cex |
Accept shifting only if it causes at least this much improvement in |
shift.amounts |
Default |
Fallen.yspace |
Extra space for fallen leaves.
Default |
boxes.include.gap |
Default |
... |
Extra |
A list with the following components. With the default args most of these are automatically calculated.
obj |
The |
snipped.nodes |
The snipped nodes, |
xlim, ylim |
The graph limits. |
x, y |
The node coords. |
branch.x, branch.y |
The branch line coords. |
labs |
The node labels. |
cex |
The node label |
boxes |
The coords of the boxes around the nodes. |
split.labs |
The split labels. |
split.cex |
The split label |
split.boxes |
The coords of the boxes around the splits. |
Please see ../doc/prp.pdf for an overview. (If your help system does follow that link correctly, please follow the link on this package's Index page.)
../doc/prp.pdf
rpart.plot
plot.rpart
text.rpart
rpart
data(ptitanic) tree <- rpart(survived ~ ., data=ptitanic, cp=.02) # cp=.02 because want small tree for demo old.par <- par(mfrow=c(2,2)) # put 4 figures on one page prp(tree, main="default prp\n(type = 0, extra = 0)") prp(tree, main="type = 4, extra = 6", type=4, extra=6, faclen=0) # faclen=0 to print full factor names cols <- ifelse(tree$frame$yval == 1, "darkred", "green4") # green if survived prp(tree, main="assorted arguments", extra=106, # display prob of survival and percent of obs nn=TRUE, # display the node numbers fallen.leaves=TRUE, # put the leaves on the bottom of the page branch=.5, # change angle of branch lines faclen=0, # do not abbreviate factor levels trace=1, # print the automatically calculated cex shadow.col="gray", # shadows under the leaves branch.lty=3, # draw branches using dotted lines split.cex=1.2, # make the split text larger than the node text split.prefix="is ", # put "is " before split text split.suffix="?", # put "?" after split text col=cols, border.col=cols, # green if survived split.box.col="lightgray", # lightgray split boxes (default is white) split.border.col="darkgray", # darkgray border on split boxes split.round=.5) # round the split box corners a tad # the old way for comparison plot(tree, uniform=TRUE, compress=TRUE, branch=.2) text(tree, use.n=TRUE, cex=.6, xpd=NA) # cex is a guess, depends on your window size title("plot.rpart for comparison", cex=.6) par(old.par)