ChartDirector 6.1 (Java Edition)

Symbol Line Chart (2)




This example demonstrates using symbols to represent data points and using gradient color for plot area background.

Source Code Listing

[JSP Version] jspdemo/symbolline2.jsp
<%@page import="ChartDirector.*" %>
<%
// The data for the line chart
double[] data0 = {42, 49, 33, 38, 64, 56, 29, 41, 44, 57, 59, 42};
double[] data1 = {65, 75, 47, 34, 42, 49, 73, 62, 90, 69, 66, 78};
double[] data2 = {36, 28, 25, 28, 38, 20, 22, 30, 25, 33, 30, 24};
String[] labels = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov",
    "Dec"};

// Create a XYChart object of size 600 x 375 pixels
XYChart c = new XYChart(600, 375);

// Add a title to the chart using 18pt Times Bold Italic font
c.addTitle("Product Line Global Revenue", "Times New Roman Bold Italic", 18);

// Set the plotarea at (50, 55) and of 500 x 280 pixels in size. Use a vertical gradient color from
// light blue (f9f9ff) to sky blue (aaccff) as background. Set border to transparent and grid lines
// to white (ffffff).
c.setPlotArea(50, 55, 500, 280, c.linearGradientColor(0, 55, 0, 335, 0xf9fcff, 0xaaccff), -1,
    Chart.Transparent, 0xffffff);

// Add a legend box at (50, 28) using horizontal layout. Use 10pt Arial Bold as font, with
// transparent background.
c.addLegend(50, 28, false, "Arial Bold", 10).setBackground(Chart.Transparent);

// Set the x axis labels
c.xAxis().setLabels(labels);

// Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this as the guideline
// when putting ticks on the y-axis.
c.yAxis().setTickDensity(30);

// Set axis label style to 8pt Arial Bold
c.xAxis().setLabelStyle("Arial Bold", 8);
c.yAxis().setLabelStyle("Arial Bold", 8);

// Set axis line width to 2 pixels
c.xAxis().setWidth(2);
c.yAxis().setWidth(2);

// Add axis title using 10pt Arial Bold Italic font
c.yAxis().setTitle("Revenue in USD millions", "Arial Bold Italic", 10);

// Add a line layer to the chart
LineLayer layer = c.addLineLayer2();

// Set the line width to 3 pixels
layer.setLineWidth(3);

// Add the three data sets to the line layer, using circles, diamands and X shapes as symbols
layer.addDataSet(data0, 0xff0000, "Quantum Computer").setDataSymbol(Chart.CircleSymbol, 9);
layer.addDataSet(data1, 0x00ff00, "Atom Synthesizer").setDataSymbol(Chart.DiamondSymbol, 11);
layer.addDataSet(data2, 0xff6600, "Proton Cannon").setDataSymbol(Chart.Cross2Shape(), 11);

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

// Include tool tip for the chart
String imageMap1 = c.getHTMLImageMap("", "",
    "title='Revenue of {dataSetName} in {xLabel}: US$ {value}M'");
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Symbol Line 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/symbolline2.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;

public class symbolline2 implements DemoModule
{
    //Name of demo program
    public String toString() { return "Symbol Line 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 data for the line chart
        double[] data0 = {42, 49, 33, 38, 64, 56, 29, 41, 44, 57, 59, 42};
        double[] data1 = {65, 75, 47, 34, 42, 49, 73, 62, 90, 69, 66, 78};
        double[] data2 = {36, 28, 25, 28, 38, 20, 22, 30, 25, 33, 30, 24};
        String[] labels = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct",
            "Nov", "Dec"};

        // Create a XYChart object of size 600 x 375 pixels
        XYChart c = new XYChart(600, 375);

        // Add a title to the chart using 18pt Times Bold Italic font
        c.addTitle("Product Line Global Revenue", "Times New Roman Bold Italic", 18);

        // Set the plotarea at (50, 55) and of 500 x 280 pixels in size. Use a vertical gradient
        // color from light blue (f9f9ff) to sky blue (aaccff) as background. Set border to
        // transparent and grid lines to white (ffffff).
        c.setPlotArea(50, 55, 500, 280, c.linearGradientColor(0, 55, 0, 335, 0xf9fcff, 0xaaccff),
            -1, Chart.Transparent, 0xffffff);

        // Add a legend box at (50, 28) using horizontal layout. Use 10pt Arial Bold as font, with
        // transparent background.
        c.addLegend(50, 28, false, "Arial Bold", 10).setBackground(Chart.Transparent);

        // Set the x axis labels
        c.xAxis().setLabels(labels);

        // Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this as the
        // guideline when putting ticks on the y-axis.
        c.yAxis().setTickDensity(30);

        // Set axis label style to 8pt Arial Bold
        c.xAxis().setLabelStyle("Arial Bold", 8);
        c.yAxis().setLabelStyle("Arial Bold", 8);

        // Set axis line width to 2 pixels
        c.xAxis().setWidth(2);
        c.yAxis().setWidth(2);

        // Add axis title using 10pt Arial Bold Italic font
        c.yAxis().setTitle("Revenue in USD millions", "Arial Bold Italic", 10);

        // Add a line layer to the chart
        LineLayer layer = c.addLineLayer2();

        // Set the line width to 3 pixels
        layer.setLineWidth(3);

        // Add the three data sets to the line layer, using circles, diamands and X shapes as
        // symbols
        layer.addDataSet(data0, 0xff0000, "Quantum Computer").setDataSymbol(Chart.CircleSymbol, 9);
        layer.addDataSet(data1, 0x00ff00, "Atom Synthesizer").setDataSymbol(Chart.DiamondSymbol, 11)
            ;
        layer.addDataSet(data2, 0xff6600, "Proton Cannon").setDataSymbol(Chart.Cross2Shape(), 11);

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

        //include tool tip for the chart
        viewer.setImageMap(c.getHTMLImageMap("clickable", "",
            "title='Revenue of {dataSetName} in {xLabel}: US$ {value}M'"));
    }

    //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 symbolline2();

        //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);
    }
}