Feature request for @geom_density macro

[christophscheuch]

Would be great if we could also create density plots as they are part of the basic visualization types in R4DS.

I guess it is a fairly low hanging fruit because AlgebraOfGraphics.jl provides the density function.

Here are some hypothetical examples:

using Tidier, PalmerPenguins
penguins = DataFrame(PalmerPenguins.load())

@ggplot(penguins, aes(x = body_mass_g)) +
  @geom_density()

@ggplot(penguins, aes(x = body_mass_g, color = species, fill = species)) +
  @geom_density(linewidth = 0.75, alpha = 0.5)

[rdboyes]

This is added - and adding new geoms that are supported in AoG really is low hanging fruit if anyone wants to try! See commit ecfc96f for all the code that was required to add this functionality :)

@ggplot(penguins, aes(x = body_mass_g, color = species, fill = species)) +
  @geom_density(linewidth = 0.75, alpha = 0.5)

[kdpsingh]

That's pretty amazing that it's so straightforward to add a geom on top of what you've already built.

Okay if I update the version and release to the registry?

[rdboyes]

Yep! I fixed the automatic missing value handling as well from issue #24