I'm trying to create a area chart where I can stack data in separate groups . What I see is that if stack is set to true, all the series are put on a single stack, irrespective of the stack-name assigned. But if I change one of the groups to bars, then the area-bar combination renders correctly. I've also tried to move one of the groups to a different axis, but with the same result .
Please have a look at the attached sample. There are two buttons at the bottom of the chart to toggle between 2 stacked area charts & 1 stacked area + 1 stacked bar chart combination .