Package org.geotools.graph.structure
Interface DirectedGraph
- All Superinterfaces:
Graph
- All Known Implementing Classes:
BasicDirectedGraph
Represents a directed graph.
In a directed graph, components have an explicit direction associated with them.
Directed nodes differentiate between those adjacent edges that originate at them (outgoing edges ) and those that
terminate at them (incoming edges).
Directed edges differentiate between the node at the the source of the edge (source node) and the node at the
destination of the edges (destination node).
The following is a figure of an undirected graph, and one of the possible directed graphs that can be derived from
it. Directionality is indicated by arrow heads on the edges of the graph.
The following information summarizes the relationships in the directed version of the graph.
| Edge | Source Node | Destination Node |
|---|---|---|
| A | 1 | 4 |
| B | 2 | 4 |
| C | 3 | 4 |
| D | 4 | 5 |
| E | 4 | 7 |
| F | 4 | 6 |
| G | 5 | 7 |
| H | 6 | 7 |
| Node | In Edges | Out Edges |
|---|---|---|
| 1 | A | |
| 2 | B | |
| 3 | C | |
| 4 | A,B,C | D,E,F |
| 5 | D | G |
| 6 | F | F |
| 7 | E,G,H |
- Author:
- Justin Deoliveira, Refractions Research Inc, jdeolive@refractions.net
- See Also:
-
Field Summary
Fields inherited from interface Graph
FAIL_QUERY, PASS_AND_CONTINUE, PASS_AND_STOP -
Method Summary
Methods inherited from interface Graph
getEdges, getNodes, getNodesOfDegree, getVisitedEdges, getVisitedNodes, queryEdges, queryNodes, visitEdges, visitNodes