I have used Java Apose.Total in order to create 2 type of charts:
Doughnut and Doughnut exaploded.
In Excel it looks ok, but in other formats, seems like different.
See attached files. For example how doughnutExploded chart looks in different formats:
in attached file : charts.png
P.S. Please move this message if you think it should be in another topic-thread.