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. Follow these steps to configure your portlet to use bar charts.

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" %>

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)
);
%>

Add the <chart> taglib to the view.jsp, passing the _barChartConfig as the config attribute’s value:
```
<chart:bar
  config="<%= _barChartConfig %>"
/>
```