ChartDirector 6.1 (Java Edition)

Cylinder Bar Shape




This example demonstrates bars of cylinder shape.

ChartDirector supports bars in cylindrical or arbitrary polygonal shapes. The shape are specified using BarLayer.setBarShape or BarLayer.setBarShape2. In this example, the cylindrical shape is illustrated.

See Shape Specification on how built-in and custom shapes are defined in ChartDirector.

Source Code Listing

[JSP Version] jspdemo/cylinderbar.jsp
<%@page import="ChartDirector.*" %>
<%
// The data for the bar chart
double[] data = {85, 156, 179.5, 211, 123};

// The labels for the bar chart
String[] labels = {"Mon", "Tue", "Wed", "Thu", "Fri"};

// Create a XYChart object of size 400 x 240 pixels.
XYChart c = new XYChart(400, 240);

// Add a title to the chart using 14pt Times Bold Italic font
c.addTitle("Weekly Server Load", "Times New Roman Bold Italic", 14);

// Set the plotarea at (45, 40) and of 300 x 160 pixels in size. Use alternating light grey (f8f8f8)
// / white (ffffff) background.
c.setPlotArea(45, 40, 300, 160, 0xf8f8f8, 0xffffff);

// Add a multi-color bar chart layer
BarLayer layer = c.addBarLayer3(data);

// Set layer to 3D with 10 pixels 3D depth
layer.set3D(10);

// Set bar shape to circular (cylinder)
layer.setBarShape(Chart.CircleShape);

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

// Add a title to the y axis
c.yAxis().setTitle("MBytes");

// Add a title to the x axis
c.xAxis().setTitle("Work Week 25");

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

// Include tool tip for the chart
String imageMap1 = c.getHTMLImageMap("", "", "title='{xLabel}: {value} MBytes'");
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Cylinder Bar Shape
</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/cylinderbar.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;

public class cylinderbar implements DemoModule
{
    //Name of demo program
    public String toString() { return "Cylinder Bar Shape"; }

    //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 bar chart
        double[] data = {85, 156, 179.5, 211, 123};

        // The labels for the bar chart
        String[] labels = {"Mon", "Tue", "Wed", "Thu", "Fri"};

        // Create a XYChart object of size 400 x 240 pixels.
        XYChart c = new XYChart(400, 240);

        // Add a title to the chart using 14pt Times Bold Italic font
        c.addTitle("Weekly Server Load", "Times New Roman Bold Italic", 14);

        // Set the plotarea at (45, 40) and of 300 x 160 pixels in size. Use alternating light grey
        // (f8f8f8) / white (ffffff) background.
        c.setPlotArea(45, 40, 300, 160, 0xf8f8f8, 0xffffff);

        // Add a multi-color bar chart layer
        BarLayer layer = c.addBarLayer3(data);

        // Set layer to 3D with 10 pixels 3D depth
        layer.set3D(10);

        // Set bar shape to circular (cylinder)
        layer.setBarShape(Chart.CircleShape);

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

        // Add a title to the y axis
        c.yAxis().setTitle("MBytes");

        // Add a title to the x axis
        c.xAxis().setTitle("Work Week 25");

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

        //include tool tip for the chart
        viewer.setImageMap(c.getHTMLImageMap("clickable", "", "title='{xLabel}: {value} MBytes'"));
    }

    //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 cylinderbar();

        //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);
    }
}