The above example shows you how to create `BarChart` using D3 package. In this example, for purpose of chart demonstration only, we do use mock-up data from array. As you can see, the KoolReport's widget in general support dataSource could be DataStore, Process, DataSource or even simple array.

ColumnChart support normal separated columns as well as stacked columns. Furthermore, the dual axis can be easy setup with few configuration.

