draw.tree {maptree} | R Documentation |
Graph a classification or regression tree with a hierarchical tree diagram, optionally including shaded square symbols at leaves and additional info at intermediate nodes.
draw.tree (tree, ps=par("ps"), size=10, col=NULL, nodeinfo=FALSE, units="units", cases="obs", digits=0)
tree |
object of class "tree" . |
ps |
pointsize of text, par parameter. |
size |
if size=0, draw terminal symbol at leaves else a colored square with sides of length size in mm. |
col |
vector of colors from hsv , rgb
etc, or if NULL, then generated as equally spaced hues, or
if "gray", then generated as gray tones. |
nodeinfo |
if TRUE, add a line at each node with mean value of response, number of observations, and percent deviance explained (or classified correct). |
units |
label for units of mean value of response, if regression tree. |
cases |
label for type of observations. |
digits |
parameter for rounding mean value of response, if regression tree. |
Styled like S post.tree
. As in plot.tree(,,type="u")
, each
level has constant depth. With nodeinfo=TRUE, deviance explained
at each node, or classification rate, is shown in text format.
The vector of colors supplied or generated.
Denis White, white.denis@epa.gov
library (tree) data (hex.env) draw.tree (prune.tree (tree (hex.env), best=6), nodeinfo=TRUE, units="species", cases="cells")