Module key 

Legend key glyphs (#410): ggplot2’s draw_key_* — which picture a layer contributes to a legend key — chosen per geom (Geom::key_glyph) or per layer (GGPlot::key_glyph), and several layers drawn into one key.

Structs

LayerKey

One layer’s contribution to the legends: its glyph (None = the pre-#410 per-aesthetic swatch) and the legend aesthetics it maps and shows.

Enums

KeyGlyph

The picture a layer draws in a legend key (ggplot2’s key_glyph =).