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## weka.gui.graphvisualizer
Class DotParser

    java.lang.Object
      weka.gui.graphvisualizer.DotParser

All Implemented Interfaces:
  GraphConstants

    public class DotParser

extends java.lang.Object
implements GraphConstants

This class parses input in DOT format, and builds the datastructures that are passed to it. It is NOT 100% compatible with the DOT format. The GraphNode and GraphEdge classes do not have any provision for dealing with different colours or shapes of nodes, there can however, be a different label and ID for a node. It also does not do anything for labels for edges. However, this class won't crash or throw an exception if it encounters any of the above attributes of an edge or a node. This class however, won't be able to deal with things like subgraphs and grouping of nodes.

Version:
  $Revision: 1.4 $ - 23 Apr 2003 - Initial version (Ashraf M. Kibriya)
Author:
  Ashraf M. Kibriya (amk14@cs.waikato.ac.nz)

Field Summary

Fields inherited from interface weka.gui.graphvisualizer.GraphConstants
`DIRECTED, DOUBLE, NORMAL, PLURAL_DUMMY, REVERSED, SINGULAR_DUMMY`

Constructor Summary
`DotParser(java.io.Reader input, FastVector nodes, FastVector edges)` Dot parser Constructor

Method Summary
`java.lang.String` | `parse()` This method parses the string or the InputStream that we passed in through the constructor and builds up the m_nodes and m_edges vectors
`static void` | `writeDOT(java.lang.String filename, java.lang.String graphName, FastVector nodes, FastVector edges)` This method saves a graph in a file in DOT format.

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### DotParser

    public DotParser(java.io.Reader input,
                     FastVector nodes,
                     FastVector edges)

  Dot parser Constructor

  Parameters:
    `input` - - The input, if passing in a string then encapsulate that in String reader object
    `nodes` - - Vector to put in GraphNode objects, corresponding to the nodes parsed in from the input
    `edges` - - Vector to put in GraphEdge objects, corresponding to the edges parsed in from the input

Method Detail

### parse

    public java.lang.String parse()

  This method parses the string or the InputStream that we passed in through the constructor and builds up the m_nodes and m_edges vectors

  Returns:
    - returns the name of the graph

### writeDOT

    public static void writeDOT(java.lang.String filename,
                                java.lang.String graphName,
                                FastVector nodes,
                                FastVector edges)

  This method saves a graph in a file in DOT format. However, if reloaded in GraphVisualizer we would need to layout the graph again.

  Parameters:
    `filename` - - The name of the file to write in. (will overwrite)
    `graphName` - - The name of the graph
    `nodes` - - Vector containing all the nodes
    `edges` - - Vector containing all the edges

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