I have a visual set up based on this json in Deneb.
Focus + Context - Smooth Histogram Zooming
Now I am trying to edit it to suit my needs and ideally when the end user uses the brush I would like data labels to appear on the bottom bar chart to show. Now i would usally add this with a layer but i can't seem to get the code correct.
Is it because of use of vconcat? Im not sure.
Any help appreciated.