View source for Graph Modeling Language export

Wandora is capable to export Topic Maps as [http://www.infosun.fim.uni-passau.de/Graphlet/GML/ Graph Modeling Language] (GML) format. The export starts with '''File > Export > Export GML graph...'''. Exported graph may be visualized with [http://www.yworks.com/en/products_yed_about.html Yed] graph editor application for example.

== Export details ==

* Each topic is exported as a graph node.
* Each binary association is converted to an edge between player nodes. Edge's label is association type.
* If association has more than two players, an extra intermediate node is created and each player is linked to the intermediate node with an edge.
* If association has only one (or none) player, it is not exported.
* Each occurrence is exported as a node and an edge between occurrence text and topic node.
* Subjects, scopes, association roles, and variant names are not exported.

Exported nodes and edges have no coordinates in graph.

== Configuring the export ==

To configure the GML export hold CTRL key down while starting the export. Configuration dialog allows you to select whether or not to

* Export class-instance relations as edges.
* Export occurrences as edges. Wandora creates a node for occurrence text and connects it to the topic node.
* Export n-ary (n>2) associations as edges. Wandora creates an inter-mediator node, and connects all n-ary association players to the inter-mediator node.
* Export directed or undirected graph. This really doesn't matter much as you you have no way of controlling the association direction.

== See also ==

* [[GraphML export]]
* [[GraphXML export]]
* [[Export adjacency matrix]]
* [[Export incidence matrix]]