edu.ucla.stat.SOCR.chart.demo.CategoryStepChartDemo1.java Source code

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Here is the source code for edu.ucla.stat.SOCR.chart.demo.CategoryStepChartDemo1.java

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package edu.ucla.stat.SOCR.chart.demo;

import java.awt.Color;
import java.beans.PropertyChangeListener;

import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.CategoryLabelPositions;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.AbstractCategoryItemRenderer;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.chart.renderer.category.CategoryStepRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.RectangleInsets;

import edu.ucla.stat.SOCR.chart.ChartGenerator_JTable;
import edu.ucla.stat.SOCR.chart.SuperCategoryChart_Bar;
import edu.ucla.stat.SOCR.chart.gui.SOCRCategorySeriesLabelGenerator;

/**
 * A simple demonstration application showing how to create a step chart 
 * using data from a {@link CategoryDataset}.
 */
public class CategoryStepChartDemo1 extends SuperCategoryChart_Bar implements PropertyChangeListener {

    /**
     * sample code showing how to create a  chart using ChartGenerator_JTable class
     */
    public void doTest() {
        JFreeChart chart;
        ChartGenerator_JTable chartMaker = new ChartGenerator_JTable();

        resetChart();
        showMessageDialog("CategoryStepChartDemo doTest get called!");

        int no_series = dataTable.getRowCount() - 1;
        int no_category = dataTable.getColumnCount() - 2;
        int[][] pairs = new int[no_category][2];
        for (int i = 0; i < no_category; i++) {
            pairs[i][0] = i + 1; //column i store category i
            pairs[i][1] = 0; //column 0 stores series name
        }
        chart = chartMaker.getCategoryChart("Step", "Category Step Chart", "Category", "value", dataTable,
                no_category, pairs, "");
        chartPanel = new ChartPanel(chart, false);

        setChart();
    }

    /**
     * Creates a sample dataset.
     * 
     * @return A dataset.
     */
    protected CategoryDataset createDataset(boolean isDemo) {
        if (isDemo) {
            domainLabel = "Category";
            rangeLabel = "Value";
            chartTitle = "Category Step Chart";
            double[][] data = new double[][] { { 1.0, 4.0, 3.0, 5.0, 5.0, 7.0, 7.0, 8.0 },
                    { 5.0, 7.0, 6.0, 8.0, 4.0, 4.0, 2.0, 1.0 }, { 4.0, 3.0, 2.0, 3.0, 6.0, 3.0, 4.0, 3.0 } };
            CategoryDataset dataset = DatasetUtilities.createCategoryDataset("Series ", "Type ", data);
            return dataset;
        } else
            return super.createDataset(false);
    }

    /**
     * Creates a chart.
     * 
     * @param dataset  the dataset.
     * 
     * @return The chart.
     */
    protected JFreeChart createChart(CategoryDataset dataset) {

        CategoryItemRenderer renderer = new CategoryStepRenderer(true);

        CategoryAxis domainAxis = new CategoryAxis(domainLabel);
        NumberAxis rangeAxis = new NumberAxis(rangeLabel);
        CategoryPlot plot = new CategoryPlot(dataset, domainAxis, rangeAxis, renderer);
        JFreeChart chart = new JFreeChart(chartTitle, plot);

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

        plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinesVisible(true);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinesVisible(true);
        plot.setRangeGridlinePaint(Color.white);

        AbstractCategoryItemRenderer renderer2 = (AbstractCategoryItemRenderer) plot.getRenderer();
        renderer2.setLegendItemLabelGenerator(new SOCRCategorySeriesLabelGenerator());

        domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
        domainAxis.setLowerMargin(0.0);
        domainAxis.setUpperMargin(0.0);
        domainAxis.addCategoryLabelToolTip("Type 1", "The first type.");
        domainAxis.addCategoryLabelToolTip("Type 2", "The second type.");
        domainAxis.addCategoryLabelToolTip("Type 3", "The third type.");

        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        rangeAxis.setLabelAngle(0 * Math.PI / 2.0);
        // OPTIONAL CUSTOMISATION COMPLETED.

        setCategorySummary(dataset);
        if (legendPanelOn)
            chart.removeLegend();
        return chart;

    }
}