Bubble Chart Legend

[arky]

Please show a legend for bubble charts to provide a reference for bubble size.

The legend could display different sized circles with corresponding text labels. The text could be inline or displayed offset by leading line for better readability.

Examples

Here an example from https://flowingdata.com/2010/11/23/how-to-make-bubble-charts/

Example of bubble chart legend with labels outside the circles from riatelab/cartography package.

cartography

[Peter]

There should be a similar, bit more simple legend for the size. We can only put out one legend at a time, so it might be that the explanation of color made it to the legend in the examples you saw.