ChartDirector 6.1 (Java Edition)

Floating Box Chart




This example demonstrates creating a multi-color floating box chart.

This chart is composed of 4 box-whisker layers, created using XYChart.addBoxWhiskerLayer. Each layer handles boxes of one color. Only the "box" part of the box-whisker layer is used.

Source Code Listing

[JSP Version] jspdemo/floatingbox.jsp
<%@page import="ChartDirector.*" %>
<%
// Sample data for the Box-Whisker chart. Represents the minimum, 1st quartile, medium, 3rd quartile
// and maximum values of some quantities
double[] Q0Data = {40, 45, 40, 30, 20, 50, 25, 44};
double[] Q1Data = {55, 60, 50, 40, 38, 60, 51, 60};
double[] Q2Data = {62, 70, 60, 50, 48, 70, 62, 70};
double[] Q3Data = {70, 80, 65, 60, 53, 78, 69, 76};
double[] Q4Data = {80, 90, 75, 70, 60, 85, 80, 84};

// The labels for the chart
String[] labels = {"Group A", "Group B", "Group C", "Group D", "Group E", "Group F", "Group G",
    "Group H"};

// Create a XYChart object of size 550 x 250 pixels
XYChart c = new XYChart(550, 275);

// Set the plotarea at (50, 25) and of size 450 x 200 pixels. Enable both horizontal and vertical
// grids by setting their colors to grey (0xc0c0c0)
c.setPlotArea(50, 50, 450, 200).setGridColor(0xc0c0c0, 0xc0c0c0);

// Add a title to the chart
c.addTitle("Computer Vision Test Scores");

// Set the labels on the x axis and the font to Arial Bold
c.xAxis().setLabels(labels).setFontStyle("Arial Bold");

// Set the font for the y axis labels to Arial Bold
c.yAxis().setLabelStyle("Arial Bold");

// Add a Box Whisker layer using light blue 0x9999ff as the fill color and blue (0xcc) as the line
// color. Set the line width to 2 pixels
c.addBoxLayer(Q4Data, Q3Data, 0x00ff00, "Top 25%");
c.addBoxLayer(Q3Data, Q2Data, 0x9999ff, "25% - 50%");
c.addBoxLayer(Q2Data, Q1Data, 0xffff00, "50% - 75%");
c.addBoxLayer(Q1Data, Q0Data, 0xff0000, "Bottom 25%");

// Add legend box at top center above the plot area using 10pt Arial Bold Font
LegendBox b = c.addLegend(50 + 225, 22, false, "Arial Bold", 10);
b.setAlignment(Chart.TopCenter);
b.setBackground(Chart.Transparent);

// Output the chart
String chart1URL = c.makeSession(request, "chart1");

// Include tool tip for the chart
String imageMap1 = c.getHTMLImageMap("", "",
    "title='{xLabel} ({dataSetName}): {bottom} to {top} points'");
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Floating Box Chart
</div>
<hr color="#000080">
<div style="font-size:10pt; font-family:verdana; margin-bottom:1.5em">
    <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a>
</div>
<img src='<%=response.encodeURL("getchart.jsp?"+chart1URL)%>'
    usemap="#map1" border="0">
<map name="map1"><%=imageMap1%></map>
</body>
</html>

[Java Version] javademo/floatingbox.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;

public class floatingbox implements DemoModule
{
    //Name of demo program
    public String toString() { return "Floating Box Chart"; }

    //Number of charts produced in this demo
    public int getNoOfCharts() { return 1; }

    //Main code for creating charts
    public void createChart(ChartViewer viewer, int chartIndex)
    {
        // Sample data for the Box-Whisker chart. Represents the minimum, 1st quartile, medium, 3rd
        // quartile and maximum values of some quantities
        double[] Q0Data = {40, 45, 40, 30, 20, 50, 25, 44};
        double[] Q1Data = {55, 60, 50, 40, 38, 60, 51, 60};
        double[] Q2Data = {62, 70, 60, 50, 48, 70, 62, 70};
        double[] Q3Data = {70, 80, 65, 60, 53, 78, 69, 76};
        double[] Q4Data = {80, 90, 75, 70, 60, 85, 80, 84};

        // The labels for the chart
        String[] labels = {"Group A", "Group B", "Group C", "Group D", "Group E", "Group F",
            "Group G", "Group H"};

        // Create a XYChart object of size 550 x 250 pixels
        XYChart c = new XYChart(550, 275);

        // Set the plotarea at (50, 25) and of size 450 x 200 pixels. Enable both horizontal and
        // vertical grids by setting their colors to grey (0xc0c0c0)
        c.setPlotArea(50, 50, 450, 200).setGridColor(0xc0c0c0, 0xc0c0c0);

        // Add a title to the chart
        c.addTitle("Computer Vision Test Scores");

        // Set the labels on the x axis and the font to Arial Bold
        c.xAxis().setLabels(labels).setFontStyle("Arial Bold");

        // Set the font for the y axis labels to Arial Bold
        c.yAxis().setLabelStyle("Arial Bold");

        // Add a Box Whisker layer using light blue 0x9999ff as the fill color and blue (0xcc) as
        // the line color. Set the line width to 2 pixels
        c.addBoxLayer(Q4Data, Q3Data, 0x00ff00, "Top 25%");
        c.addBoxLayer(Q3Data, Q2Data, 0x9999ff, "25% - 50%");
        c.addBoxLayer(Q2Data, Q1Data, 0xffff00, "50% - 75%");
        c.addBoxLayer(Q1Data, Q0Data, 0xff0000, "Bottom 25%");

        // Add legend box at top center above the plot area using 10pt Arial Bold Font
        LegendBox b = c.addLegend(50 + 225, 22, false, "Arial Bold", 10);
        b.setAlignment(Chart.TopCenter);
        b.setBackground(Chart.Transparent);

        // Output the chart
        viewer.setChart(c);

        //include tool tip for the chart
        viewer.setImageMap(c.getHTMLImageMap("clickable", "",
            "title='{xLabel} ({dataSetName}): {bottom} to {top} points'"));
    }

    //Allow this module to run as standalone program for easy testing
    public static void main(String[] args)
    {
        //Instantiate an instance of this demo module
        DemoModule demo = new floatingbox();

        //Create and set up the main window
        JFrame frame = new JFrame(demo.toString());
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);} });
        frame.getContentPane().setBackground(Color.white);

        // Create the chart and put them in the content pane
        ChartViewer viewer = new ChartViewer();
        demo.createChart(viewer, 0);
        frame.getContentPane().add(viewer);

        // Display the window
        frame.pack();
        frame.setVisible(true);
    }
}