Generating Graph Representations for Models

The system of equations after symbolic transformation is represented by a graph. OpenModelica can generate graph representations which can be displayed in the graph tool yed (http://www.yworks.com/products/yed). The graph generation is activated with the debug flag

+d=graphml

Two different graphml- files are generated in the working directory. TaskGraph_model.graphml, showing the strongly-connected components of the model and BipartiteGraph_CompleteDAE_model.graphml showing all variables and equations. When loading the graphs with yEd, all nodes are in one place. Please use the various layout algorithms to get a better overview.

_images/taskgraph.png

Figure 40 A task-graph representation of a model in yEd

_images/bipartit.png

Figure 41 A biparite graph representation of a model in yEd