Currently, renderers that should have support for qualitative variables do not. While some renderers only make sense for quantitative variables (lines for a time series, histogram, ...), the notable exceptions are points and col.
Namely, points should be able to display a dot-plot, and col should achieve similar results to bar (except the data should be taken literally).
Furthermore, boxplot should not assume a qualitative variable. In short, we need qualitative-quantitative inference. By all means, this "inference" could just be string?
Note that since plot generally expects that both axes are quantitative (and anything against it requires some isomorphism to a subset of the reals), this is antithetical to the design of plot.
Currently, renderers that should have support for qualitative variables do not. While some renderers only make sense for quantitative variables (
linesfor a time series,histogram, ...), the notable exceptions arepointsandcol.Namely,
pointsshould be able to display a dot-plot, andcolshould achieve similar results tobar(except the data should be taken literally).Furthermore,
boxplotshould not assume a qualitative variable. In short, we need qualitative-quantitative inference. By all means, this "inference" could just bestring?Note that since
plotgenerally expects that both axes are quantitative (and anything against it requires some isomorphism to a subset of the reals), this is antithetical to the design ofplot.