Spline Charts

Spline charts contain multiple sets of data. A spline chart connects points of data with a smooth curve. 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 spline charts.

Import the chart taglib along with the SplineChartConfig 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.spline.SplineChartConfig" %>
<%@ page import="com.liferay.frontend.taglib.chart.model.MultiValueColumn" %>

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

<%
SplineChartConfig _splineChartConfig = new SplineChartConfig();

_splineChartConfig.addColumns(
  new MultiValueColumn("data1", 100, 20, 30),
  new MultiValueColumn("data2", 20, 70, 100));
}
%>

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

A spline chart connects points of data with a smooth curve.

You can also use an area spline chart if you prefer. An area spline chart highlights the area under the spline curve.

<chart:area-spline
  config="<%= _splineChartConfig %>"
/>

An area spline chart highlights the area under the spline curve.

Awesome! Now you know how to create spline charts for your apps.

Spline Charts

Spline Charts

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