Description
May be related to #674, but on advice from @rpaskowitz setting up as a separate request. I would like to suggest a 3-way toggling so that an entry can be on, off or highlighted. Sometimes, when trying to visually analyze a subset of plots in a crowded graph it might help to either dim the rest or just make a selected few stand out? So you still want the context of the other plots for comparison just not at the same visibility level as the selected subset.
Thanks to @rpaskowitz for suggesting the following:
I'd recommend doing something like that with a hover interaction, for example: http://c3js.org/samples/timeseries.html
My rejoinder:
Almost exactly what I was thinking only with a little more persistence so that one can have multiple highlighted.