Hi,

I'd like to show several sub-groups of data in the same stacked bar chart, with a heading for each group, like this:

Group 1
Category 1 |----|--------|-----|
Category 2 |--|-------|-|
Category 3 |----|----|------|
Group 2
Category 4 |------|-------|----|
Category 5 |---|-----|------|
Group 3
Category 6 |------|---|------|

How can I do that?

I'd like to show all sub-groups in the same chart, since they belong to the same main group and have the same kind Y axis values.

Thanks!