using Plots with the
pgfplotsx() option. Is it possible to easily add a legend title using this package?
Something like this:
(Not my picture found here https://statisticsglobe.com/change-legend-title-ggplot-r )
I only care about solutions for the PgfPlotsX package, since I am using this plotting package for all my other plots.
I am aware of the option of starting from an empty tikz document and building everything manually using PgfPlotsX, but this seems cumbersome when I only need to do this one thing.