The OPTGRAPH Procedure
Overview: OPTGRAPH Procedure
The OPTGRAPH procedure includes a number of graph theory, combinatorial optimization, and network analysis algorithms. The algorithm classes are listed in Table 1.
Table 1: Algorithm Classes in PROC OPTGRAPH
| Algorithm Class | PROC OPTGRAPH Statement |
| Biconnected components | BICONCOMP |
| Centrality metrics | CENTRALITY |
| Maximal cliques | CLIQUE |
| Community detection | COMMUNITY |
| Connected components | CONCOMP |
| Core decomposition | CORE |
| Cycle detection | CYCLE |
| Eigenvector problem | EIGENVECTOR |
| Weighted matching | LINEAR_ASSIGNMENT |
| Minimum-cost network flow | MINCOSTFLOW |
| Minimum cut | MINCUT |
| Minimum spanning tree | MINSPANTREE |
| Reach networks | REACH |
| Shortest path | SHORTPATH |
| Graph summary | SUMMARY |
| Transitive closure | TRANSITIVE_CLOSURE |
| Traveling salesman | TSP |
You can use the OPTGRAPH procedure to analyze relationships between entities. These relationships are typically defined by using a graph. A graph is defined over a set N of nodes and a set A of arcs. A node is an abstract representation of some entity (or object), and an arc defines some relationship (or connection) between two nodes. The terms node and vertex are often interchanged in describing an entity. The term arc is often interchanged with the term edge or link when describing a connection.
You can check the SAS log for the version number being used in any invocation of PROC OPTGRAPH. The following statements check the version:
proc optgraph;
run;
Then the log displays the version number as shown in Figure 1.
Figure 1: Version Number Displayed in Log
| NOTE: ------------------------------------------------------------------------------------------ |
| NOTE: Running OPTGRAPH version 15.1. |
| NOTE: ------------------------------------------------------------------------------------------ |
| NOTE: The OPTGRAPH procedure is executing in single-machine mode. |
| NOTE: ------------------------------------------------------------------------------------------ |