wm.edu.cs420.Data.ChartBuilder.java Source code

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Here is the source code for wm.edu.cs420.Data.ChartBuilder.java

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package wm.edu.cs420.Data;

/* ===========================================================
 * 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.]
 *
 * -------------------
 * ChartBuilder.java
 * -------------------
 * (C) Copyright 2004, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: ChartBuilder.java,v 1.5 2004/04/26 19:11:55 taqua Exp $
 *
 * Changes
 * -------
 * 27-Jan-2004 : Version 1 (DG);
 * 
 */

import java.awt.Color;
import java.awt.Shape;
import java.awt.geom.Ellipse2D;
import java.io.File;
import java.io.IOException;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
//import org.jfree.ui.Spacer;

/**
 * A simple demonstration application showing how to create a line chart using data from an
 * {@link XYDataset}.
 *
 */
public class ChartBuilder {
    private int width = 400;
    private int height = 500;
    private XYSeries series = null;

    /**
     * Creates a new demo.
     *
     * @param title  the frame title.
     */
    public ChartBuilder() {

    }

    public JFreeChart createTestChart() {
        final XYDataset dataset = createTestDataset();
        final JFreeChart chart = generateChart(dataset);
        return chart;
    }

    public JFreeChart createChart() {
        final XYSeriesCollection dataset = new XYSeriesCollection();
        dataset.addSeries(series);
        series = null;
        return generateChart(dataset);
    }

    public void addPoint(double x, double y) {
        if (series == null) {
            series = new XYSeries("");
        }
        series.add(x, y);
    }

    /**
     * Creates a sample dataset.
     * 
     * @return a sample dataset.
     */
    public XYDataset createTestDataset() {

        final XYSeries series1 = new XYSeries("");
        series1.add(1.0, 1.0);
        series1.add(2.0, 4.0);
        series1.add(3.0, 3.0);
        series1.add(4.0, 5.0);
        series1.add(5.0, 5.0);
        series1.add(6.0, 7.0);
        series1.add(7.0, 7.0);
        series1.add(8.0, 8.0);

        final XYSeriesCollection dataset = new XYSeriesCollection();
        dataset.addSeries(series1);

        return dataset;

    }

    public void setSize(int width, int height) {
        this.width = width;
        this.height = height;
    }

    /**
     * Creates a chart.
     * 
     * @param dataset  the data for the chart.
     * 
     * @return a chart.
     */
    private JFreeChart generateChart(final XYDataset dataset) {

        // create the chart...
        final JFreeChart chart = ChartFactory.createXYLineChart(null, // chart title
                null, // x axis label
                null, // y axis label
                dataset, // data
                PlotOrientation.VERTICAL, false, // include legend
                false, // tooltips
                false // urls
        );

        // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
        chart.setBackgroundPaint(Color.white);

        //        final StandardLegend legend = (StandardLegend) chart.getLegend();
        //      legend.setDisplaySeriesShapes(true);

        // get a reference to the plot for further customisation...
        final XYPlot plot = chart.getXYPlot();
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);

        final XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer();
        renderer.setSeriesLinesVisible(0, false);
        Shape shape = new Ellipse2D.Double(0, 0, 3, 3);
        renderer.setSeriesShape(0, shape);
        plot.setRenderer(renderer);

        // change the auto tick unit selection to integer units only...
        final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        // OPTIONAL CUSTOMISATION COMPLETED.

        return chart;

    }

}