How do I make a specified parameter appear in the legend. I'm pretty sure I've seen this done via a simple parameter or function, and I think it's pretty recent in ggplot.How do I make a specified parameter appear in t
How do I make a specified parameter appear in the legend. I'm pretty sure I've seen this done via a simple parameter or function, and I think it's pretty recent in ggplot.How do I make a specified parameter appear in t