Gauge Charts

Gauge charts are percentage-based. A gauge chart shows where percentage-based data falls over a given range. Each data set must be defined as a new instance of the SingleValueColumn object. This tutorial shows how to configure your portlet to use gauge charts.

Follow these steps:

1. Import the chart taglib along with the GaugeChartConfig and SingleValueColumn 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.gauge.GaugeChartConfig" %>
   <%@ page import="com.liferay.frontend.taglib.chart.model.SingleValueColumn" %>
   

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

   <%
   GaugeChartConfig _gaugeChartConfig = new GaugeChartConfig();
   
   _gaugeChartConfig.addColumn(
     new SingleValueColumn("data1", 85.4)
   );
   %>
   

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

   <chart:gauge
     config="<%= _gaugeChartConfig %>"
   />
   

Figure 1: A gauge chart shows where percentage-based data falls over a given range.

Related Topics

Pie Charts

Donut Charts

Bar Charts