Welcome in the
ridgeline chart
section of the gallery. Sometimes called joyplot, this kind of chart
allows to visualize the distribution of several numeric variables, as
stated in
data-to-viz.com. Here are several examples implemented using R
and the
ridgelines
R package
ggridges
package.In term of code, a ridgeline chart is simply a set of many density plots. Thus, starting by learning the basics of density chart is probably a good idea.