What would you call this type of plot, and is it possible to create them in R?
EDIT: many thanks all - very helpful. Best title so far: quantised violin plots!
Sorry I don't have enough street cred on CV to post a comment, where this is more appropriate, but here is a link to some code in R to perform something like what you've depicted, using base graphics to rotate histograms in place of the density function inherent in ggplot2:
from stack overflow: http://stackoverflow.com/questions/15846873/symmetrical-violin-plot-like-histogram
if someone with appropriate powers cares to move this from answer to comment, please do.
It's a little hard to tell what the plots are supposed to represent, but they look an awful lot like violin plots.
A violin plot is essentially a vertical, doubled kernel density plot, so that the width along the x axis corresponds to greater density at the corresponding value along the y axis.
You can generate them in package
Edit: there is also an R package called