Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Library: xclust
See also: cartsplit dispcarttree grcarttree dispcart2

Macro: dispcarttree
Description: Plots the regression tree of CART in a display

Reference(s):

Link:
Usage: dispcarttree(ctdisp, xn, yn, cs, stri)
Input:
ctdisp display for showing the tree
xn scalar, column number of window
yn scalar, row number of window
cs list of vectors: data structure which represents a binary tree and is produced by cartsplit procedure, contains vectors .. cs.val, cs.vec, cs.mean, cs.ssr, cs.nelem. See cartsplit for the description of cs.
stri string: optional argument, either missing, "nelem", "ssr" or "mean".

Note:

Example:
; loads the library xclust
library ("xclust")
; generate an artifcal dataset
x1=#(0,0,0,0,1,1,1,1,1,2)
x2=#(0,0,0,0,0,0,0,1,1,1)
x=x1~x2
y=#(0,0,0,0,100,100,100,120,120,120)
; run CART on our data
cs=cartsplit(x,y,#(0,1))
; plot CART tree
d = createdisplay(1,1)
dispcarttree(cs,1,1)
Result:
shows the tree with the splitting rules

Library: xclust
See also: cartsplit dispcarttree grcarttree dispcart2

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Author: 1999 Jussi Klemelae, 2000-04-15, Sigbert Klinke
(C) MD*TECH Method and Data Technologies, 17.8.2000