hadley/ggplot2 — comment on commit 173094a923eb2ece8c57887755eca4e45df7b67d
File: R/geom-dotplot.r line 26
By wch:

Unfortunately, I don't think it's possible to totally remove the axis labels and ticks from inside the geom code -- the user has to do that manually. There are some deeply-ingrained differences in how x and y are handled by ggplot2, so `coord_flip` can't in general be expected to give the same result as swapping variables.