dynamicdatademo3.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.]
 *
 * ---------------------
 * DynamicDataDemo3.java
 * ---------------------
 * (C) Copyright 2004, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited).
 * Contributor(s):   -;
 *
 * $Id: DynamicDataDemo3.java,v 1.5 2004/04/26 19:11:54 taqua Exp $
 *
 * Changes
 * -------
 * 02-Mar-2004 : Version 1 (DG);
 *
 */

package org.jfree.chart.demo;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JPanel;

import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.Legend;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.CombinedDomainXYPlot;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.StandardXYItemRenderer;
import org.jfree.data.time.Millisecond;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import org.jfree.ui.Spacer;

/**
 * A demonstration application showing a time series chart where you can dynamically add
 * (random) data by clicking on a button.
 *
 */
public class DynamicDataDemo3 extends ApplicationFrame implements ActionListener {

    /** The number of subplots. */
    public static final int SUBPLOT_COUNT = 3;
    
    /** The datasets. */
    private TimeSeriesCollection[] datasets;
    
    /** The most recent value added to series 1. */
    private double[] lastValue = new double[SUBPLOT_COUNT];

    /**
     * Constructs a new demonstration application.
     *
     * @param title  the frame title.
     */
    public DynamicDataDemo3(final String title) {

        super(title);
        
        final CombinedDomainXYPlot plot = new CombinedDomainXYPlot(new DateAxis("Time"));
        this.datasets = new TimeSeriesCollection[SUBPLOT_COUNT];
        
        for (int i = 0; i < SUBPLOT_COUNT; i++) {
            this.lastValue[i] = 100.0;
            final TimeSeries series = new TimeSeries("Random " + i, Millisecond.class);
            this.datasets[i] = new TimeSeriesCollection(series);
            final NumberAxis rangeAxis = new NumberAxis("Y" + i);
            rangeAxis.setAutoRangeIncludesZero(false);
            final XYPlot subplot = new XYPlot(
                    this.datasets[i], null, rangeAxis, new StandardXYItemRenderer()
            );
            subplot.setBackgroundPaint(Color.lightGray);
            subplot.setDomainGridlinePaint(Color.white);
            subplot.setRangeGridlinePaint(Color.white);
            plot.add(subplot);
        }

        final JFreeChart chart = new JFreeChart("Dynamic Data Demo 3", plot);
        chart.getLegend().setAnchor(Legend.EAST);
        chart.setBorderPaint(Color.black);
        chart.setBorderVisible(true);
        chart.setBackgroundPaint(Color.white);
        
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);
        plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 4, 4, 4, 4));
        final ValueAxis axis = plot.getDomainAxis();
        axis.setAutoRange(true);
        axis.setFixedAutoRange(60000.0);  // 60 seconds
        
        final JPanel content = new JPanel(new BorderLayout());

        final ChartPanel chartPanel = new ChartPanel(chart);
        content.add(chartPanel);

        final JPanel buttonPanel = new JPanel(new FlowLayout());
        
        for (int i = 0; i < SUBPLOT_COUNT; i++) {
            final JButton button = new JButton("Series " + i);
            button.setActionCommand("ADD_DATA_" + i);
            button.addActionListener(this);
            buttonPanel.add(button);
        }
        final JButton buttonAll = new JButton("ALL");
        buttonAll.setActionCommand("ADD_ALL");
        buttonAll.addActionListener(this);
        buttonPanel.add(buttonAll);
        
        content.add(buttonPanel, BorderLayout.SOUTH);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 470));
        chartPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
        setContentPane(content);

    }

    // ****************************************************************************
    // * 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.             *
    // ****************************************************************************
    
    /**
     * Handles a click on the button by adding new (random) data.
     *
     * @param e  the action event.
     */
    public void actionPerformed(final ActionEvent e) {
 
        for (int i = 0; i < SUBPLOT_COUNT; i++) {
            if (e.getActionCommand().endsWith(String.valueOf(i))) {
                final Millisecond now = new Millisecond();
                System.out.println("Now = " + now.toString());
                this.lastValue[i] = this.lastValue[i] * (0.90 + 0.2 * Math.random());
                this.datasets[i].getSeries(0).add(new Millisecond(), this.lastValue[i]);       
            }
        }

        if (e.getActionCommand().equals("ADD_ALL")) {
            final Millisecond now = new Millisecond();
            System.out.println("Now = " + now.toString());
            for (int i = 0; i < SUBPLOT_COUNT; i++) {
                this.lastValue[i] = this.lastValue[i] * (0.90 + 0.2 * Math.random());
                this.datasets[i].getSeries(0).add(new Millisecond(), this.lastValue[i]);       
            }
        }

    }

    /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(final String[] args) {

        final DynamicDataDemo3 demo = new DynamicDataDemo3("Dynamic Data Demo 3");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

}