| The DTREE Procedure |
TREEPLOT Statement
- TREEPLOT / options ;
The TREEPLOT statement plots the current decision tree (a diagram of the decision problem). Each path in the decision tree represents a possible scenario of the problem. In addition to the nodes and links on the decision tree, the information for each link that can be displayed on the diagram is listed in Table 5.24.
Table 5.24: Information on Decision Tree Diagram| Information | Labeled by |
| stage name for the successor of the link | NL |
| outcome name for the link | NL |
| probability of the outcome | p= |
| value can be expected from the successor | EV= |
| instant reward of the outcome | r= |
| cumulative rewards of outcomes on the path that leads to the successor | cr= |
NL denotes that this information is not labeled.
If necessary, the outcome names and the stage names are
displayed above the link, and other information (if there
is any) is displayed below the link.
The DISPLAY= option can be used to control
which information
should be included in the diagram. The NOLABEL can be used
to suppress the displaying of the labels.
If the LINEPRINTER option is used, the decision nodes, chance nodes, and the end nodes are represented by the characters 'D', 'C', and 'E', respectively. The links are displayed using the specifications of the FORMCHAR= option. See the section "PROC DTREE Statement" for more details. In graphics mode, the control of the appearances of nodes and links is more complex. See the section "Displaying the Decision Tree" for more information.
The following options that can appear in the PROC DTREE statement can also be specified in the TREEPLOT statement:
| DISPLAY=(information-list) | GRAPHICS | LABEL |
| LINEPRINTER | MAXPREC=d | MAXWIDTH=mw |
| NOLABEL | NWIDTH=nw | YBETWEEN=ybetween <units> |
The following line-printer options that can appear in the
PROC DTREE
statement can also be specified in the TREEPLOT statement
if the LINEPRINTER
option is specified:
| FORMCHAR<(syni-list)>='formchar-string' |
Moreover, the following graphics options that can appear in the
PROC DTREE statement
can also be specified in the TREEPLOT statement if the
GRAPHICS option is specified:
| ANNOTATE=SAS-data-set | CBEST=color | CLINK=color | |
| COMPRESS | CSYMBOLC=color | CSYMBOLD=color | |
| CSYMBOLE=color | CTEXT=color | DESCRIPTION='string' | |
| DOANNOTATE | FTEXT=name | GOUT=SAS-catalog | |
| HSYMBOL=h | HTEXT=h | IMAGEMAP=SAS-data-set | |
| LEGEND | LINKA=i | LINKB=j | |
| LINKC=k | LSTYLE=l | LSTYLEB=l2 | |
| LSTYLEC=l3 | LWIDTH=w2 | LWIDTHB=w2 | |
| NAME='string' | NOANNOTATE | NOCOMPRESS | |
| NOLEGEND | NOPAGENUM | NORC | |
| PAGENUM | RC | SYMBOLC=m | |
| SYMBOLD=d | SYMBOLE=n | VSYMBOLC=symbolc-name | |
| VSYMBOLD=symbold-name | VSYMBOLE=symbole-name |
The options specified in
this statement are in effect only for this statement, and they may
override the options specified in the
PROC DTREE statement.
Copyright © 2008 by SAS Institute Inc., Cary, NC, USA. All rights reserved.