Package ilog.views.graphlayout

A high-level, generic framework for the graph layout services provided by JViews, which allows you to easily obtain readable representations of graphs and networks.

See: Description

Interface Summary

Interface	Description
GraphLayoutEventListener	GraphLayoutEventListener defines the interface for an object that is to be notified after each step or iteration of a layout algorithm.
GraphLayoutParameterEventListener	GraphLayoutParameterEventListener defines the interface for an object that is to be notified whenever any layout parameter changes.
GraphModelListener	GraphModelListener defines the interface for an object that listens for changes in a graph model (IlvGraphModel).
IlvAutoLayoutHandler	An interface used to automatically perform a layout again following a structural or geometric change of the graph.
IlvGrapherPropertyAdapter	An IlvGrapherPropertyAdapter supports saving graph layout parameters to named properties of an encapsulated IlvGrapher.
IlvGraphLayoutUtil.FreeLinkConnectorFactory	A factory for creating a link connector of class IlvFreeLinkConnector for a node.
IlvLayoutProvider	An interface used to specify the layout instance to be used for laying out a given graph.
IlvLinkClipInterface	An interface used to customize the computation of the connection points of the links.
IlvLinkConnectionBoxInterface	An interface used to customize the computation of the connection points of the links.
IlvNodeBoxInterface	An interface used to define a rectangle associated with a node of a graph.
IlvNodeSideFilter	An interface used to define complex requirements concerning the connection of the links to the different sides of the nodes.

Class Summary

Class	Description
GraphLayoutEvent	Provides data for the layout step event on layout instances.
GraphLayoutParameterEvent	Provides data for the parameter event on layout instances.
GraphModelEvent	Encapsulates information describing changes to a graph model.
IlvDefaultLayoutProvider	A default implementation of the interface IlvLayoutProvider.
IlvGrapherAdapter	An IlvGrapherAdapter encapsulates an IlvGrapher and provides a bridge between the API of the IlvGrapher and the API of the IlvGraphModel.
IlvGraphLayout	The base class of the Graph Layout algorithms.
IlvGraphLayoutGrapherProperty	The class IlvGraphLayoutGrapherProperty allows you to store the global settings of an instance of IlvGraphLayout as a named property in the grapher.
IlvGraphLayoutLinkProperty	The class IlvGraphLayoutLinkProperty allows you to store the settings of an instance of IlvGraphLayout for an individual link as a named property in the link.
IlvGraphLayoutNodeProperty	The class IlvGraphLayoutNodeProperty allows you to store the settings of an instance of IlvGraphLayout for an individual node as a named property in the node.
IlvGraphLayoutReport	The base class of the objects used to store information about the behavior of the layout algorithms.
IlvGraphLayoutUtil	This class regroups some graph layout utilities.
IlvGraphModel	IlvGraphModel defines a suitable generic API for graphs that have to be laid out with JViews graph layout algorithms.
IlvLayoutGraphicFilter	This class allows you to perform the layout on a subgraph; that is, on a subset of the nodes and links of the original grapher (IlvGrapher).
IlvRelativeLinkConnector	Deprecated Beginning with JViews 6.0 you should use IlvFreeLinkConnector instead, which has the same functionality.
IlvRotatedGraphModel	An graph model that rotates all coordinates by a specific angle.
IlvSplineLinkFilter	IlvSplineLinkFilter is used by the layout algorithms that support optimized spline routing.

Exception Summary

Exception	Description
IlvGraphLayoutException	The base class of the exceptions that can be thrown by the graph layout algorithms.
IlvInappropriateGraphException	This exception can occur when a layout algorithm cannot deal with a particular graph.
IlvInappropriateLinkException	This exception can occur when a layout algorithm cannot deal with a particular link.

Package ilog.views.graphlayout Description

A high-level, generic framework for the graph layout services provided by JViews, which allows you to easily obtain readable representations of graphs and networks.

Many types of complex business data can be best visualized as a set of nodes and interconnecting links, more commonly called a graph. Examples of graphs include business organizational charts, systems management drawings, telecom network displays, and genealogical trees. Whenever these graphs become large or heavily interconnected, it becomes difficult to see the relationships between the various nodes and links.

This is where JViews' Graph Layout algorithms help. They allow you to take a "messy" graph and apply a sophisticated graph layout algorithm to it, to rearrange the positions of the nodes and/or the shape of the links. The result is a more readable, more understandable, and more meaningful data presentation.

According to the type of graph and your specific needs, you can choose one of the ready-to-use layout algorithms provided in JViews, or create your own one and still benefit from the general layout framework.

The table below helps you for choosing the best suited ready-to-use layout algorithm. For details, see the Graph Layout User's Manual.

Click on the image to see the original size.

Domain-Independent Graphs				Telecom-Oriented Representations
Trees	Cyclic Graphs	Combination of Cycles and Trees	Any	Bus	Ring and Star
Tree Layout Tree Layout in Radial Mode	Topological Mesh Layout	Spring Embedder Uniform Length Edges	Link Layout Hierarchical Layout	Bus Layout	Circular Layout

Since:

JViews 2.0

See Also:

IlvGrapher, ilog.views.graphlayout.hierarchical, ilog.views.graphlayout.tree, ilog.views.graphlayout.uniformlengthedges, ilog.views.graphlayout.springembedder, ilog.views.graphlayout.topologicalmesh, ilog.views.graphlayout.link, ilog.views.graphlayout.bus, ilog.views.graphlayout.circular, ilog.views.graphlayout.grid, ilog.views.graphlayout.random