ChartDirector 6.1 (Java Edition)

Scatter Chart




This example demonstrates a scatter chart created using XYChart.addScatterLayer.

Source Code Listing

[JSP Version] jspdemo/scatter.jsp
<%@page import="ChartDirector.*" %>
<%
// The XY points for the scatter chart
double[] dataX0 = {10, 15, 6, 12, 14, 8, 13, 13, 16, 12, 10.5};
double[] dataY0 = {130, 150, 80, 110, 110, 105, 130, 115, 170, 125, 125};

double[] dataX1 = {6, 12, 4, 3.5, 7, 8, 9, 10, 12, 11, 8};
double[] dataY1 = {65, 80, 40, 45, 70, 80, 80, 90, 100, 105, 60};

// Create a XYChart object of size 450 x 420 pixels
XYChart c = new XYChart(450, 420);

// Set the plotarea at (55, 65) and of size 350 x 300 pixels, with a light grey border (0xc0c0c0).
// Turn on both horizontal and vertical grid lines with light grey color (0xc0c0c0)
c.setPlotArea(55, 65, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1);

// Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12pt Times Bold
// Italic font. Set the background and border color to Transparent.
c.addLegend(50, 30, false, "Times New Roman Bold Italic", 12).setBackground(Chart.Transparent);

// Add a title to the chart using 18pt Times Bold Itatic font.
c.addTitle("Genetically Modified Predator", "Times New Roman Bold Italic", 18);

// Add a title to the y axis using 12pt Arial Bold Italic font
c.yAxis().setTitle("Length (cm)", "Arial Bold Italic", 12);

// Add a title to the x axis using 12pt Arial Bold Italic font
c.xAxis().setTitle("Weight (kg)", "Arial Bold Italic", 12);

// Set the axes line width to 3 pixels
c.xAxis().setWidth(3);
c.yAxis().setWidth(3);

// Add an orange (0xff9933) scatter chart layer, using 13 pixel diamonds as symbols
c.addScatterLayer(dataX0, dataY0, "Genetically Engineered", Chart.DiamondSymbol, 13, 0xff9933);

// Add a green (0x33ff33) scatter chart layer, using 11 pixel triangles as symbols
c.addScatterLayer(dataX1, dataY1, "Natural", Chart.TriangleSymbol, 11, 0x33ff33);

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

// Include tool tip for the chart
String imageMap1 = c.getHTMLImageMap("", "",
    "title='[{dataSetName}] Weight = {x} kg, Length = {value} cm'");
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Scatter 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/scatter.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;

public class scatter implements DemoModule
{
    //Name of demo program
    public String toString() { return "Scatter 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)
    {
        // The XY points for the scatter chart
        double[] dataX0 = {10, 15, 6, 12, 14, 8, 13, 13, 16, 12, 10.5};
        double[] dataY0 = {130, 150, 80, 110, 110, 105, 130, 115, 170, 125, 125};

        double[] dataX1 = {6, 12, 4, 3.5, 7, 8, 9, 10, 12, 11, 8};
        double[] dataY1 = {65, 80, 40, 45, 70, 80, 80, 90, 100, 105, 60};

        // Create a XYChart object of size 450 x 420 pixels
        XYChart c = new XYChart(450, 420);

        // Set the plotarea at (55, 65) and of size 350 x 300 pixels, with a light grey border
        // (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color
        // (0xc0c0c0)
        c.setPlotArea(55, 65, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1);

        // Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12pt Times
        // Bold Italic font. Set the background and border color to Transparent.
        c.addLegend(50, 30, false, "Times New Roman Bold Italic", 12).setBackground(
            Chart.Transparent);

        // Add a title to the chart using 18pt Times Bold Itatic font.
        c.addTitle("Genetically Modified Predator", "Times New Roman Bold Italic", 18);

        // Add a title to the y axis using 12pt Arial Bold Italic font
        c.yAxis().setTitle("Length (cm)", "Arial Bold Italic", 12);

        // Add a title to the x axis using 12pt Arial Bold Italic font
        c.xAxis().setTitle("Weight (kg)", "Arial Bold Italic", 12);

        // Set the axes line width to 3 pixels
        c.xAxis().setWidth(3);
        c.yAxis().setWidth(3);

        // Add an orange (0xff9933) scatter chart layer, using 13 pixel diamonds as symbols
        c.addScatterLayer(dataX0, dataY0, "Genetically Engineered", Chart.DiamondSymbol, 13,
            0xff9933);

        // Add a green (0x33ff33) scatter chart layer, using 11 pixel triangles as symbols
        c.addScatterLayer(dataX1, dataY1, "Natural", Chart.TriangleSymbol, 11, 0x33ff33);

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

        //include tool tip for the chart
        viewer.setImageMap(c.getHTMLImageMap("clickable", "",
            "title='[{dataSetName}] Weight = {x} kg, Length = {value} cm'"));
    }

    //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 scatter();

        //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);
    }
}