/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* VisualizeJ48.java
* Copyright (C) 2009 University of Waikato, Hamilton, New Zealand
*/
package wekaexamples.gui.treevisualizer;
import weka.classifiers.trees.J48;
import weka.core.Instances;
import weka.core.converters.ConverterUtils.DataSource;
import weka.gui.treevisualizer.PlaceNode2;
import weka.gui.treevisualizer.TreeVisualizer;
import java.awt.BorderLayout;
import javax.swing.JFrame;
/**
* Displays a trained J48 as tree.
* Expects an ARFF filename as first argument.
*
* @author FracPete (fracpete at waikato dot ac dot nz)
* @version $Revision: 5628 $
*/
public class VisualizeJ48 {
/**
* Expects an ARFF file as first parameter (class attribute is assumed to
* be the last attribute).
*
* @param args the commandline arguments
* @throws Exception if something goes wrong
*/
public static void main(String args[]) throws Exception {
// train classifier
J48 cls = new J48();
Instances data = DataSource.read(args[0]);
data.setClassIndex(data.numAttributes() - 1);
cls.buildClassifier(data);
// display tree
TreeVisualizer tv = new TreeVisualizer(null, cls.graph(), new PlaceNode2());
JFrame jf = new JFrame("Weka Classifier Tree Visualizer: J48");
jf.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
jf.setSize(800, 600);
jf.getContentPane().setLayout(new BorderLayout());
jf.getContentPane().add(tv, BorderLayout.CENTER);
jf.setVisible(true);
// adjust tree
tv.fitToScreen();
}
}