smallnumberdemo.java

这是一个segy数据显示程序

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * --------------------
 * SmallNumberDemo.java
 * --------------------
 * (C) Copyright 2003, 2004, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: SmallNumberDemo.java,v 1.7 2004/04/26 19:12:03 taqua Exp $
 *
 * Changes
 * -------
 * 23-Sep-2003 : Version 1 (DG);
 *
 */

package org.jfree.chart.demo;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.StandardTickUnitSource;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.XYSeries;
import org.jfree.data.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/**
 * A demo showing the use of very small numbers in a dataset.
 *
 */
public class SmallNumberDemo extends ApplicationFrame {

    /**
     * Creates a new demo instance.
     *
     * @param title  the frame title.
     */
    public SmallNumberDemo(final String title) {

        super(title);
        final XYSeries series = new XYSeries("Small Numbers");
        series.add(1.0E-5, 1.0E-16); 
        series.add(5.0E-5, 2.0E-12); 
        series.add(17.3E-5, 5.0E-7); 
        series.add(21.2E-5, 9.0E-6); 
        final XYSeriesCollection data = new XYSeriesCollection(series);
        final JFreeChart chart = ChartFactory.createXYLineChart(
            "Small Number Demo",
            "X", 
            "Y", 
            data,
            PlotOrientation.VERTICAL,
            true,
            true,
            false
        );
        final XYPlot plot = chart.getXYPlot();
        plot.getDomainAxis().setStandardTickUnits(new StandardTickUnitSource());
        plot.getRangeAxis().setStandardTickUnits(new StandardTickUnitSource());

        final ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(chartPanel);

    }

    // ****************************************************************************
    // * JFREECHART DEVELOPER GUIDE                                               *
    // * The JFreeChart Developer Guide, written by David Gilbert, is available   *
    // * to purchase from Object Refinery Limited:                                *
    // *                                                                          *
    // * http://www.object-refinery.com/jfreechart/guide.html                     *
    // *                                                                          *
    // * Sales are used to provide funding for the JFreeChart project - please    * 
    // * support us so that we can continue developing free software.             *
    // ****************************************************************************
    
    /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(final String[] args) {

        System.out.println("Min Double: " + Double.MIN_VALUE);
        final SmallNumberDemo demo = new SmallNumberDemo("Small Number Demo");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

}