%useLatestDescriptors
%use lets-plot

LetsPlot.getInfo()

val rand = java.util.Random(37)
val data = mapOf (
    "rating" to List(200) { rand.nextGaussian() } + List(200) { rand.nextGaussian() * 1.5 + 1 },
    "cond" to List(200) { "A" } + List(200) { "B" }
)

letsPlot(data) { x = "rating"; fill = "cond" } + ggsize(700, 300) +
    geomDensity(color = "dark_green", alpha = .7) + scaleFillBrewer(type = "seq") +
    theme(panelGridMajorX = "blank")