PowerQuery now supports non-time based x-axis charts with two columns (one for the x-axis and one for the plot). Here is a bar graph that shows all of the subsidiary account's log volume distribution.
account=* tag='subsidiaryLogVolume' metric='logBytes'
| group gbday = sum(value)/queryspan("seconds") * 0.00008046627 by account
| sort -gbday
| columns "Team Account"=account,"GB/Day"=gbday
The setting needs to be toggled to "Grouped Data" for the x-axis. In the future, we will "just know" what type of plot it is, so the button will no longer be needed. Besides that, there are other known limitations at this time. For instance, if the x-axis is numeric, DataSet still treats it like a text value. Also, it doesn't handle multi-plot (3+ columns total) in this current version.
More comprehensive features are in the works. Stay tuned!