Group barchart by categorial field

[lukavdplas]

Question from Jo Guldi:

For the party view, I'd like to see the breakout of each term by party over time, a bart chart over time, i.e. in different colors

We have the option to create grouped bar charts, but only to compare queries. It would be nice to also group by keyword fields.

That said, we should ask how interesting this is for the people and parliament researchers. I have the impression they not as interested in these keyword fields like house/party.