1 Stack bars on top of each other
3 To stack bars on top of each other, you can add stackedbarpos styles and
4 further bars to the list of styles. ... The stackbarpos need to get different
5 column names each time to access the new stack data. This example also adds
6 text styles to the bars, which just repeat the value column data here, but they
7 could refer to other columns as well.