Java tutorial
/* * Encog(tm) Workbench v3.0 * http://www.heatonresearch.com/encog/ * http://code.google.com/p/encog-java/ * Copyright 2008-2011 Heaton Research, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * For more information on Heaton Research copyrights, licenses * and trademarks visit: * http://www.heatonresearch.com/copyright */ package org.encog.workbench.tabs.rbf; import java.awt.BasicStroke; import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JComboBox; import javax.swing.JPanel; import org.encog.mathutil.rbf.GaussianFunction; import org.encog.mathutil.rbf.InverseMultiquadricFunction; import org.encog.mathutil.rbf.MexicanHatFunction; import org.encog.mathutil.rbf.MultiquadricFunction; import org.encog.mathutil.rbf.RadialBasisFunction; import org.encog.workbench.tabs.EncogCommonTab; import org.encog.workbench.util.graph.EncogChartPanel; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; import org.jfree.data.function.Function2D; import org.jfree.data.general.DatasetUtilities; import org.jfree.data.xy.XYDataset; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; public class RadialBasisFunctionsTab extends EncogCommonTab implements ActionListener { /** * */ private static final long serialVersionUID = 4472644832610364833L; private JButton buttonClose; private RadialBasisFunction rbf; private JComboBox typeCombo; private ChartPanel chartPanel; public RadialBasisFunctionsTab() { super(null); this.setLayout(new BorderLayout()); JPanel buttonPanel = new JPanel(); add(buttonPanel, BorderLayout.SOUTH); this.buttonClose = new JButton("Close"); buttonPanel.add(this.buttonClose); this.buttonClose.addActionListener(this); //this.weightInfo = new WeightInfo(this); //this.add(this.weightInfo,BorderLayout.NORTH); // double[] center = { 0.0 }; this.rbf = new GaussianFunction(1.0, center, 1.0); XYDataset dataset = this.createDataset(); JFreeChart chart = this.createChart(dataset); this.chartPanel = new EncogChartPanel(chart); this.add(chartPanel, BorderLayout.CENTER); this.typeCombo = new JComboBox(); this.add(this.typeCombo, BorderLayout.NORTH); this.typeCombo.addItem(GaussianFunction.class.getSimpleName()); this.typeCombo.addItem(MultiquadricFunction.class.getSimpleName()); this.typeCombo.addItem(InverseMultiquadricFunction.class.getSimpleName()); this.typeCombo.addItem(MexicanHatFunction.class.getSimpleName()); this.typeCombo.addActionListener(this); } public JFreeChart createChart(XYDataset dataset) { JFreeChart chart = ChartFactory.createXYLineChart(null, "input (x)", "output (y)", dataset, PlotOrientation.VERTICAL, true, true, false); XYPlot plot = (XYPlot) chart.getPlot(); plot.setDomainZeroBaselineVisible(true); plot.setRangeZeroBaselineVisible(true); plot.setDomainPannable(true); plot.setRangePannable(true); ValueAxis xAxis = plot.getDomainAxis(); xAxis.setLowerMargin(0.0); xAxis.setUpperMargin(0.0); XYLineAndShapeRenderer r = (XYLineAndShapeRenderer) plot.getRenderer(); r.setDrawSeriesLineAsPath(true); r.setSeriesStroke(0, new BasicStroke(1.5f)); r.setSeriesStroke(1, new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f, new float[] { 6.0f, 4.0f }, 0.0f)); r.setSeriesStroke(2, new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f, new float[] { 6.0f, 4.0f, 3.0f, 3.0f }, 0.0f)); r.setSeriesStroke(3, new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f, new float[] { 4.0f, 4.0f }, 0.0f)); return chart; } public XYDataset createDataset() { String title = rbf.getClass().getSimpleName(); XYSeriesCollection dataset = new XYSeriesCollection(); Function2D n1 = new RBFFunction2D(this.rbf);// //new NormalDistributionFunction2D(0.0, 1.0); XYSeries s1 = DatasetUtilities.sampleFunction2DToSeries(n1, -5.1, 5.1, 121, title); dataset.addSeries(s1); return dataset; } public void actionPerformed(ActionEvent e) { if (e.getSource() == this.buttonClose) { this.dispose(); } else if (e.getSource() == this.typeCombo) { int index = this.typeCombo.getSelectedIndex(); double[] center = { 0.0 }; switch (index) { case 0: this.rbf = new GaussianFunction(1.0, center, 1.0); break; case 1: this.rbf = new MultiquadricFunction(1.0, center, 1.0); break; case 2: this.rbf = new InverseMultiquadricFunction(1.0, center, 1.0); break; case 3: this.rbf = new MexicanHatFunction(1.0, center, 1.0); break; } XYDataset dataset = this.createDataset(); JFreeChart chart = this.createChart(dataset); this.chartPanel.setChart(chart); } } @Override public String getName() { return "RBF"; } }