Plots the density plots by faceting

data(tips, package = "reshape")
 ggally_facetdensity(tips, mapping = ggplot2::aes(x = total_bill, y = sex))

ggally_facetdensity(
   tips,
   mapping = ggplot2::aes_string(y = "total_bill", x = "sex", color = "sex")
 )