js-data-struct | data struct lib use javascript | 3D Printing library

There are probably quite a few ways to fix this. I'll just mention two possibilities.

1. Use a dimension with array-based keys. The community fork of dc.js supports "tag" dimensions, where a row can be associated with multiple key values. If I understand correctly, you would not need to flatten your data if you use this feature.

2. Use a group instead of a dimension for your data table. This works, as shown in this example, as long as you are okay with descending order. This way you are displaying aggregated data instead of the raw rows. If you need ascending order, you can wrap your group using this adaptor which adds a .bottom(N) method: