org.jfree.chart.demo.CategoryStepChartDemo1.java Source code

Introduction

Here is the source code for org.jfree.chart.demo.CategoryStepChartDemo1.java

Source

package org.jfree.chart.demo;

import java.awt.Color;
import java.awt.Dimension;

import javax.swing.JPanel;

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.labels.StandardCategoryToolTipGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.CategoryStepRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RectangleInsets;
import org.jfree.ui.RefineryUtilities;

public class CategoryStepChartDemo1 extends ApplicationFrame {

    private static final long serialVersionUID = 1L;

    public CategoryStepChartDemo1(String s) {
        super(s);
        CategoryDataset categorydataset = createDataset();
        JFreeChart jfreechart = createChart(categorydataset);
        ChartPanel chartpanel = new ChartPanel(jfreechart);
        chartpanel.setPreferredSize(new Dimension(500, 270));
        chartpanel.setEnforceFileExtensions(false);
        setContentPane(chartpanel);
    }

    private static CategoryDataset createDataset() {
        double ad[][] = { { 1.0D, 4D, 3D, 5D, 5D, 7D, 7D, 8D }, { 5D, 7D, 6D, 8D, 4D, 4D, 2D, 1.0D },
                { 4D, 3D, 2D, 3D, 6D, 3D, 4D, 3D } };
        CategoryDataset categorydataset = DatasetUtilities.createCategoryDataset("Series ", "Type ", ad);
        return categorydataset;
    }

    private static JFreeChart createChart(CategoryDataset categorydataset) {
        CategoryStepRenderer categorysteprenderer = new CategoryStepRenderer(true);
        categorysteprenderer.setBaseToolTipGenerator(new StandardCategoryToolTipGenerator());
        CategoryAxis categoryaxis = new CategoryAxis("Category");
        NumberAxis numberaxis = new NumberAxis("Value");
        CategoryPlot categoryplot = new CategoryPlot(categorydataset, categoryaxis, numberaxis,
                categorysteprenderer);
        JFreeChart jfreechart = new JFreeChart("Category Step Chart", categoryplot);
        jfreechart.setBackgroundPaint(Color.white);
        categoryplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D));
        categoryplot.setBackgroundPaint(Color.lightGray);
        categoryplot.setDomainGridlinesVisible(true);
        categoryplot.setDomainGridlinePaint(Color.white);
        categoryplot.setRangeGridlinesVisible(true);
        categoryplot.setRangeGridlinePaint(Color.white);
        categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
        categoryaxis.setLowerMargin(0.0D);
        categoryaxis.setUpperMargin(0.0D);
        categoryaxis.addCategoryLabelToolTip("Type 1", "The first type.");
        categoryaxis.addCategoryLabelToolTip("Type 2", "The second type.");
        categoryaxis.addCategoryLabelToolTip("Type 3", "The third type.");
        numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        numberaxis.setLabelAngle(0.0D);
        return jfreechart;
    }

    public static JPanel createDemoPanel() {
        JFreeChart jfreechart = createChart(createDataset());
        return new ChartPanel(jfreechart);
    }

    public static void main(String args[]) {
        CategoryStepChartDemo1 categorystepchartdemo1 = new CategoryStepChartDemo1(
                "JFreeChart : CategoryStepChartDemo1");
        categorystepchartdemo1.pack();
        RefineryUtilities.centerFrameOnScreen(categorystepchartdemo1);
        categorystepchartdemo1.setVisible(true);
    }
}