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vtkRandomGraphSource

Section: Visualization Toolkit Infovis Classes

# Usage

Generates a graph with a specified number of vertices, with the density of edges specified by either an exact number of edges or the probability of an edge. You may additionally specify whether to begin with a random tree (which enforces graph connectivity).

To create an instance of class vtkRandomGraphSource, simply invoke its constructor as follows

      obj = vtkRandomGraphSource

# Methods

The class vtkRandomGraphSource has several methods that can be used. They are listed below. Note that the documentation is translated automatically from the VTK sources, and may not be completely intelligible. When in doubt, consult the VTK website. In the methods listed below, `obj` is an instance of the vtkRandomGraphSource class.

- `string = obj.GetClassName ()`
- `int = obj.IsA (string name)`
- `vtkRandomGraphSource = obj.NewInstance ()`
- `vtkRandomGraphSource = obj.SafeDownCast (vtkObject o)`
- `int = obj.GetNumberOfVertices ()` - The number of vertices in the graph.
- `obj.SetNumberOfVertices (int )` - The number of vertices in the graph.
- `int = obj.GetNumberOfVerticesMinValue ()` - The number of vertices in the graph.
- `int = obj.GetNumberOfVerticesMaxValue ()` - The number of vertices in the graph.
- `int = obj.GetNumberOfEdges ()` - If UseEdgeProbability is off, creates a graph with the specified number of edges. Duplicate (parallel) edges are allowed.
- `obj.SetNumberOfEdges (int )` - If UseEdgeProbability is off, creates a graph with the specified number of edges. Duplicate (parallel) edges are allowed.
- `int = obj.GetNumberOfEdgesMinValue ()` - If UseEdgeProbability is off, creates a graph with the specified number of edges. Duplicate (parallel) edges are allowed.
- `int = obj.GetNumberOfEdgesMaxValue ()` - If UseEdgeProbability is off, creates a graph with the specified number of edges. Duplicate (parallel) edges are allowed.
- `double = obj.GetEdgeProbability ()` - If UseEdgeProbability is on, adds an edge with this probability between 0 and 1 for each pair of vertices in the graph.
- `obj.SetEdgeProbability (double )` - If UseEdgeProbability is on, adds an edge with this probability between 0 and 1 for each pair of vertices in the graph.
- `double = obj.GetEdgeProbabilityMinValue ()` - If UseEdgeProbability is on, adds an edge with this probability between 0 and 1 for each pair of vertices in the graph.
- `double = obj.GetEdgeProbabilityMaxValue ()` - If UseEdgeProbability is on, adds an edge with this probability between 0 and 1 for each pair of vertices in the graph.
- `obj.SetIncludeEdgeWeights (bool )` - When set, includes edge weights in an array named "edge_weights". Defaults to off. Weights are random between 0 and 1.
- `bool = obj.GetIncludeEdgeWeights ()` - When set, includes edge weights in an array named "edge_weights". Defaults to off. Weights are random between 0 and 1.
- `obj.IncludeEdgeWeightsOn ()` - When set, includes edge weights in an array named "edge_weights". Defaults to off. Weights are random between 0 and 1.
- `obj.IncludeEdgeWeightsOff ()` - When set, includes edge weights in an array named "edge_weights". Defaults to off. Weights are random between 0 and 1.
- `obj.SetEdgeWeightArrayName (string )` - The name of the edge weight array. Default "edge weight".
- `string = obj.GetEdgeWeightArrayName ()` - The name of the edge weight array. Default "edge weight".
- `obj.SetDirected (bool )` - When set, creates a directed graph, as opposed to an undirected graph.
- `bool = obj.GetDirected ()` - When set, creates a directed graph, as opposed to an undirected graph.
- `obj.DirectedOn ()` - When set, creates a directed graph, as opposed to an undirected graph.
- `obj.DirectedOff ()` - When set, creates a directed graph, as opposed to an undirected graph.
- `obj.SetUseEdgeProbability (bool )` - When set, uses the EdgeProbability parameter to determine the density of edges. Otherwise, NumberOfEdges is used.
- `bool = obj.GetUseEdgeProbability ()` - When set, uses the EdgeProbability parameter to determine the density of edges. Otherwise, NumberOfEdges is used.
- `obj.UseEdgeProbabilityOn ()` - When set, uses the EdgeProbability parameter to determine the density of edges. Otherwise, NumberOfEdges is used.
- `obj.UseEdgeProbabilityOff ()` - When set, uses the EdgeProbability parameter to determine the density of edges. Otherwise, NumberOfEdges is used.
- `obj.SetStartWithTree (bool )` - When set, builds a random tree structure first, then adds additional random edges.
- `bool = obj.GetStartWithTree ()` - When set, builds a random tree structure first, then adds additional random edges.
- `obj.StartWithTreeOn ()` - When set, builds a random tree structure first, then adds additional random edges.
- `obj.StartWithTreeOff ()` - When set, builds a random tree structure first, then adds additional random edges.
- `obj.SetAllowSelfLoops (bool )` - If this flag is set to true, edges where the source and target vertex are the same can be generated. The default is to forbid such loops.
- `bool = obj.GetAllowSelfLoops ()` - If this flag is set to true, edges where the source and target vertex are the same can be generated. The default is to forbid such loops.
- `obj.AllowSelfLoopsOn ()` - If this flag is set to true, edges where the source and target vertex are the same can be generated. The default is to forbid such loops.
- `obj.AllowSelfLoopsOff ()` - If this flag is set to true, edges where the source and target vertex are the same can be generated. The default is to forbid such loops.
- `obj.SetAllowParallelEdges (bool )` - When set, multiple edges from a source to a target vertex are allowed. The default is to forbid such loops.
- `bool = obj.GetAllowParallelEdges ()` - When set, multiple edges from a source to a target vertex are allowed. The default is to forbid such loops.
- `obj.AllowParallelEdgesOn ()` - When set, multiple edges from a source to a target vertex are allowed. The default is to forbid such loops.
- `obj.AllowParallelEdgesOff ()` - When set, multiple edges from a source to a target vertex are allowed. The default is to forbid such loops.
- `obj.SetGeneratePedigreeIds (bool )` - Add pedigree ids to vertex and edge data.
- `bool = obj.GetGeneratePedigreeIds ()` - Add pedigree ids to vertex and edge data.
- `obj.GeneratePedigreeIdsOn ()` - Add pedigree ids to vertex and edge data.
- `obj.GeneratePedigreeIdsOff ()` - Add pedigree ids to vertex and edge data.
- `obj.SetVertexPedigreeIdArrayName (string )` - The name of the vertex pedigree id array. Default "vertex id".
- `string = obj.GetVertexPedigreeIdArrayName ()` - The name of the vertex pedigree id array. Default "vertex id".
- `obj.SetEdgePedigreeIdArrayName (string )` - The name of the edge pedigree id array. Default "edge id".
- `string = obj.GetEdgePedigreeIdArrayName ()` - The name of the edge pedigree id array. Default "edge id".
- `obj.SetSeed (int )` - Control the seed used for pseudo-random-number generation. This ensures that vtkRandomGraphSource can produce repeatable results.
- `int = obj.GetSeed ()` - Control the seed used for pseudo-random-number generation. This ensures that vtkRandomGraphSource can produce repeatable results.