Bar Charts

Bar charts contain multiple sets of data. A bar chart models the data in bars. Each data series (created with the addColumns() method) is defined with a new instance of the MultiValueColumn object, which takes an ID and a set of values. This tutorial shows how to configure your portlet to use bar charts.

Follow these steps:

1. Import the chart taglib along with the BarChartConfig and MultiValueColumn classes into your bundle’s init.jsp file:

   <%@ taglib prefix="chart" uri="http://liferay.com/tld/chart" %>
   <%@ page import="com.liferay.frontend.taglib.chart.model.point.bar.BarChartConfig" %>
   <%@ page import="com.liferay.frontend.taglib.chart.model.MultiValueColumn" %>
   

2. Add the following Java scriptlet to the top of your view.jsp:

   <%
   BarChartConfig _barChartConfig = new BarChartConfig();
   
   _barChartConfig.addColumns(
   	new MultiValueColumn("data1", 100, 20, 30),
   	new MultiValueColumn("data2", 20, 70, 100)
   );
   
   %>
   

3. Add the <chart> taglib to the view.jsp, passing the _barChartConfig as the config attribute’s value:

   <chart:bar
     config="<%= _barChartConfig %>"
   />
   

Figure 1: A bar chart models the data in bars.

Related Topics

Line Charts

Donut Charts

Combination Charts