ColumnWithDrilldown is free?i can't use ColumnWithDrilldown,it just show ch

Directory Vaadin Charts
1

ColumnWithDrilldown is free?i can’t use ColumnWithDrilldown,it just show chart,but can’t to next ,i am from china

2

Please see the documentation for the drill down at http://bit.ly/1eadpkv, the tutorial at http://bit.ly/1EdCL61 and the demo (with sources) at http://bit.ly/1EVCVQR. Good luck.