Additional axis tooltip to display totals

This is a demo tutorial. While there is no step-by-step commentary available (yet), the live demo below is fully functional. Feel free to open it for full source code.

This demo shows how we can add an additional date axis on top of the chart to show a tooltip with sum of values of all series. The tooltip uses an adapter to dynamically calculate its content.

See the Pen
Stacked Area
by amCharts team (@amcharts)
on CodePen.0