Direct discovery use metric field as dimension in chart
I have a direct query with a Dimension field that associates to the in-memory data and a Measure field with realtime data that should be populated from an external database. The principle idea is working out fine, but I run into trouble when I try to visualize the realtime data nicely. It seems that I can not use the direct-discovery-measure field as the dimension of a graph (thats not totally unexpected considering this is explicitly not a dimension in the direct discovery query however, that would be the preferred way of visualization. I, for instance, want a bar chart where the set of bars is defined by the measure field.
So my question is: is this possible using Direct Discovery? If not, how else should best approach this problem? Is there some kind of workaround?