ChartDirector 6.1 (Java Edition)

3D Scatter Chart (2)




This example extends the 3D Scatter Chart (1) example by including drop lines, using alternative view angles and continuous coloring.

Drop lines are lines that drop from the data points to the XY plane. They help to visualize the "height" (the z-coordinate) of the points and can be useful if there are not too many data points.

Source Code Listing

[JSP Version] jspdemo/threedscatter2.jsp
<%@page import="ChartDirector.*" %>
<%
// The XYZ data for the 3D scatter chart as 3 random data series
RanSeries r = new RanSeries(3);
double[] xData = r.getSeries2(20, 100, -10, 10);
double[] yData = r.getSeries2(20, 100, -10, 10);
double[] zData = r.getSeries2(20, 100, -10, 10);

// Create a ThreeDScatterChart object of size 720 x 520 pixels
ThreeDScatterChart c = new ThreeDScatterChart(720, 520);

// Add a title to the chart using 20 points Times New Roman Italic font
c.addTitle("3D Scatter Chart (2)  ", "Times New Roman Italic", 20);

// Set the center of the plot region at (350, 240), and set width x depth x height to 360 x 360 x
// 270 pixels
c.setPlotRegion(350, 240, 360, 360, 270);

// Set the elevation and rotation angles to 15 and 30 degrees
c.setViewAngle(15, 30);

// Add a scatter group to the chart using 13 pixels glass sphere symbols, in which the color depends
// on the z value of the symbol
ThreeDScatterGroup g = c.addScatterGroup(xData, yData, zData, "", Chart.GlassSphere2Shape, 13,
    Chart.SameAsMainColor);

// Add grey (888888) drop lines to the symbols
g.setDropLine(0x888888);

// Add a color axis (the legend) in which the left center is anchored at (645, 220). Set the length
// to 200 pixels and the labels on the right side. Use smooth gradient coloring.
c.setColorAxis(645, 220, Chart.Left, 200, Chart.Right).setColorGradient();

// Set the x, y and z axis titles using 10 points Arial Bold font
c.xAxis().setTitle("X-Axis Place Holder", "Arial Bold", 10);
c.yAxis().setTitle("Y-Axis Place Holder", "Arial Bold", 10);
c.zAxis().setTitle("Z-Axis Place Holder", "Arial Bold", 10);

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

// Include tool tip for the chart
String imageMap1 = c.getHTMLImageMap("", "", "title='(x={x|p}, y={y|p}, z={z|p}'");
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    3D Scatter Chart (2)
</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/threedscatter2.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;

public class threedscatter2 implements DemoModule
{
    //Name of demo program
    public String toString() { return "3D Scatter Chart (2)"; }

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

    //Main code for creating charts
    public void createChart(ChartViewer viewer, int chartIndex)
    {
        // The XYZ data for the 3D scatter chart as 3 random data series
        RanSeries r = new RanSeries(3);
        double[] xData = r.getSeries2(20, 100, -10, 10);
        double[] yData = r.getSeries2(20, 100, -10, 10);
        double[] zData = r.getSeries2(20, 100, -10, 10);

        // Create a ThreeDScatterChart object of size 720 x 520 pixels
        ThreeDScatterChart c = new ThreeDScatterChart(720, 520);

        // Add a title to the chart using 20 points Times New Roman Italic font
        c.addTitle("3D Scatter Chart (2)  ", "Times New Roman Italic", 20);

        // Set the center of the plot region at (350, 240), and set width x depth x height to 360 x
        // 360 x 270 pixels
        c.setPlotRegion(350, 240, 360, 360, 270);

        // Set the elevation and rotation angles to 15 and 30 degrees
        c.setViewAngle(15, 30);

        // Add a scatter group to the chart using 13 pixels glass sphere symbols, in which the color
        // depends on the z value of the symbol
        ThreeDScatterGroup g = c.addScatterGroup(xData, yData, zData, "", Chart.GlassSphere2Shape,
            13, Chart.SameAsMainColor);

        // Add grey (888888) drop lines to the symbols
        g.setDropLine(0x888888);

        // Add a color axis (the legend) in which the left center is anchored at (645, 220). Set the
        // length to 200 pixels and the labels on the right side. Use smooth gradient coloring.
        c.setColorAxis(645, 220, Chart.Left, 200, Chart.Right).setColorGradient();

        // Set the x, y and z axis titles using 10 points Arial Bold font
        c.xAxis().setTitle("X-Axis Place Holder", "Arial Bold", 10);
        c.yAxis().setTitle("Y-Axis Place Holder", "Arial Bold", 10);
        c.zAxis().setTitle("Z-Axis Place Holder", "Arial Bold", 10);

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

        //include tool tip for the chart
        viewer.setImageMap(c.getHTMLImageMap("clickable", "", "title='(x={x|p}, y={y|p}, z={z|p}'"))
            ;
    }

    //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 threedscatter2();

        //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);
    }
}