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How To Browse Ontologies

How to browse ontologies

RDFScape provides a contextual menu to "browse" the content of an ontology. This can be activated for each node (the action to activate it is the default for contextual menus on yor operating systems, this may be right-click or ctrl-click on macs). This shows all statements having the URI corresponding to this node as object ("<-") or subjec ("->"). By selecting a menu item the corresponding statement (property + object or subject) is added to the network. Note that the way this menu is rendered may change in a near future to increase its redability.

How layout is performed while browsing:

  • If the network is small (<5 nodes), a full layout is issued each time an element is added to the network. the default layout algorithm (or Jgraph-circular if the default was grid) is used.
  • If the network is between 5 and 15 nodes, the same process as above applies, but the last node selected is kept in place.
  • If the network is bigger, no automatic layout is performed.

An example of browsing is illustrated below:

Instructions

This screenshot is from v 0.2. Later versions offer a new menu more intuitive.

detail:

This screenshot is from v 0.2. Later versions offer a new menu more intuitive.

A few options affects RDFScape browsing mechanisms. All options for namespaces discussed in Selecting Namespaces are effective while browsing. Other are discussed in How to tune visualization options

FAQ