
Too be a little bit more complete / make it easier to understand - would you mind to include a small example + support for 'PieChart' in your latest code? Thank you

If I see it right it, there is some initial support (e.g. in the 'Enter data' window) for 'stacked bars', but none are calculated/displayed for now?
Beside this now it's time to try and understand, use it with own projects and expand it according to anyone's needs.
For me it will take some time...