Grouping of graph elements

aiSee offers various ways of grouping nodes and edges. Grouping is done either statically, i.e. in the graph specification (see GDL in a Nutshell), or dynamically, i.e. interactively. If not stated otherwise, the operations mentioned in this section are all located in the Folding submenu of the main menu.

Grouping of edges

A group of edges is a set of edges belonging to the same edge class. The user can expose/hide edges by enabling/disabling edge classes. Edges of enabled edge classes and their target nodes are drawn in the graph window. Edges of disabled edge classes and all nodes accessible via these edges are not drawn and are not considered in the layout calculation of the graph.

Grouping of nodes

A group of nodes is either

• A subgraph,
• A region specified by paths (path region), or
• A region of neighboring nodes (neighbor region).

A group of nodes can be treated in a special way. It can be

• Folded into a summary node
• Shown in a box
• Shown as a cluster
• Wrapped
• Represented exclusively

A summary node is usually drawn in a special shape and/or color so as to be recognized as a summary node (see GDL in a Nutshell). It represents all the nodes that are hidden by the folding operation. A summary node can be

• Unfolded
• Unfolded into a box
• Unfolded and represented as a cluster
• Unfolded and wrapped

The next page shows an example of a nested graph in different grouping and folding stages.

Last modified on 26 April 2002 by webmaster. © 2000-2002 AbsInt.
URL: http://www.aisee.com/manual/unix/21.htm

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