Feature proposal:
AS-IS:
The rangeSelector capability currently shows up only a single datafield, although the chart itself may show up multiple lines.
The issue is that the choosen time span may show no line/area in the rangeSelector widget, while there is a graph in the chart.
Thus, if you look for values according to the rangeSelector widget you may not be aware of values when there is no indication in the rangeSelector widget.
TO-BE:
Offer the capability to add more than one datafield at definition of the rangeSelector widget, so that can take he same amout as dataseries defined
