001    /*
002     * Copyright (C) 2008-2010 by Holger Arndt
003     *
004     * This file is part of the Universal Java Matrix Package (UJMP).
005     * See the NOTICE file distributed with this work for additional
006     * information regarding copyright ownership and licensing.
007     *
008     * UJMP is free software; you can redistribute it and/or modify
009     * it under the terms of the GNU Lesser General Public License as
010     * published by the Free Software Foundation; either version 2
011     * of the License, or (at your option) any later version.
012     *
013     * UJMP is distributed in the hope that it will be useful,
014     * but WITHOUT ANY WARRANTY; without even the implied warranty of
015     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
016     * GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public
019     * License along with UJMP; if not, write to the
020     * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
021     * Boston, MA  02110-1301  USA
022     */
023    
024    package org.ujmp.jmathplot;
025    
026    import java.awt.BorderLayout;
027    
028    import org.math.plot.Plot2DPanel;
029    import org.ujmp.core.Matrix;
030    
031    public class JMathPlotHistogramPanel extends AbstractJMathPlotPanel {
032            private static final long serialVersionUID = 6167298417945009767L;
033    
034            private final int bins = 10;
035    
036            public JMathPlotHistogramPanel(Matrix matrix) {
037                    super(matrix);
038            }
039    
040            
041            public void repaintUI() {
042                    Matrix matrix = getMatrix();
043                    Plot2DPanel panel = new Plot2DPanel();
044                    for (int c = 0; c < matrix.getColumnCount(); c++) {
045                            double[] y = new double[(int) matrix.getRowCount()];
046                            for (int r = 0; r < matrix.getRowCount(); r++) {
047                                    y[r] = matrix.getAsDouble(r, c);
048                            }
049                            String colName = matrix.getColumnLabel(c);
050                            colName = colName == null ? "Column " + c : colName;
051                            panel.addHistogramPlot(colName, y, bins);
052                    }
053                    panel.setAxisLabels(new String[] { "Value", "Frequency" });
054                    setLayout(new BorderLayout());
055                    panel.addLegend("SOUTH");
056                    add(panel, BorderLayout.CENTER);
057                    setPanel(panel);
058                    getParent().repaint();
059            }
060    
061    }