Create multiple pie chart in single frame using JFreeChart
This Example shows you how to create a multiple pie charts in a single frame in jsp page using JFreeChart. Code given below creates a simple pie charts
for given values.
In the code given below we have extended class ApplicationFrame to create a frame and also pass a string value to the constructor of ApplicationFrame class by using super keyword that will be name of the created frame.
Methods used in this example are described below:
pack(): This method invokes the layout manager.
centerFrameOnScreen(): This method is used for the position of the frame in the middle of the screen.
setVisible(): This method is used for display frame on the screen.
createCategoryDataset(): This method is used to create the instance of CategoryDataset Interface and that contains a copy of the data in an array.
createMultiplePieChart(): This method is used to create bar chart for given values. It
takes title, category axis label, dataset, legend, tool tips and urls as parameters.
saveChartAsPNG(): This method is used to save chart in to png format.
jspmultilepiechart.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@ page import="java.awt.*" %>
<%@ page import="java.io.*" %>
<%@ page import="org.jfree.chart.*" %>
<%@ page import="org.jfree.chart.entity.*" %>
<%@ page import="org.jfree.chart.plot.*"%>
<%@ page import ="org.jfree.data.category.*"%>
<%@ page import ="org.jfree.data.general.*"%>
<%@ page import ="org.jfree.util.*"%>
<%
final double[][] data = new double[][]{
{3.0, 4.0, 3.0, 5.0},
{5.0, 7.0, 6.0, 8.0},
{5.0, 7.0, 3.0, 8.0},
{1.0, 2.0, 3.0, 4.0},
{2.0, 3.0, 2.0, 3.0}
};
final CategoryDataset dataset =
DatasetUtilities.createCategoryDataset(
"Region ", "Sales/Q", data);
final JFreeChart chart =
ChartFactory.createMultiplePieChart(
"Multiple Pie Chart", dataset, TableOrder.BY_ROW,
true, true, false);
chart.setBackgroundPaint(new Color(249, 231, 236));
try {
final ChartRenderingInfo info = new ChartRenderingInfo
(new StandardEntityCollection());
final File file1 = new File("../webapps/jspchart/
web/multipiechart.png");
ChartUtilities.saveChartAsPNG(
file1, chart, 800, 600, info);
} catch (Exception e) {
out.println(e);
}
%>
<html>
<head>
<meta http-equiv="Content-Type"
content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<IMG SRC="multipiechart.png"
WIDTH="600" HEIGHT="400" BORDER="0"
USEMAP="#chart">
</body>
</html>
|
Output:
Download
code
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