Displaying what controls bubble size on a bubble chart
I love bubble charts. People may need them explained once or twice, but then bubbles are just so great at packing interesting information into a big space.
I've had a look, and I think I'm missing something obvious: How do you label what's controlling the bubble size? It's critical to know this when you're trying to interpret a bubble graph, but I don't see where it shows up. It can appear in a hover as a value, and you can indicate something in a (long) title.
The same question applies to labelling the series use to color the bubbles, etc., if used. In my current example, I'm only using x,y and size.
P.S. I did look through the docs and hunt through the options in the Analyzer...but I could have missed what I'm looking forward. A friend describes that phenomenon as "fridge blindness." As in, "Where are the pickles?"...and they're right in front of you.