Bar plots with variable bases (intensive and extensive variables at once)

Is there a particular name for bar plots, in which bars are rectangular, with unequal bases?

That is:

• width represents size (e.g. population),
• height represents intensive variable (e.g. CO$_2$ emission per capita),
• area represents extensive variable (e.g. total CO$_2$ emission). In the same vein: this and that. Another one: "Real GDP Per Capita and Shares of Global Population" (found here): I find these plots immensely useful, as they show both the local effect (is a country particularly rich, polluting, militaristic...) and the global share (of economy/pollution/military power).

I have even made one: Research publications per capita? - Academia.SE. I care for its name both to search for examples, plotting libraries/functions etc, and to propagate this way of presenting data.

• All bars are rectangular (quadrilateral with four right angles)! What's a little unusual here are the varying (unequal) bar widths. Plotting cumulative shares like this is perhaps more commonly done using a Lorenz curve, which in turn is a kind of P-P (probability-probability) plot. You have here discrete versions with several bars identified. I don't know that this has, or really needs, a distinctive name. Your second graph is closer to a Lorenz curve; the first has extra structure given by grouping. Jun 29 '15 at 13:17
• @NickCox I missed "uneven base" (fixed). Thanks for brining Lorenz curve (I know it, but I was not thinking about it as bar plots from this question can, but don't have to be, ordered). Jun 29 '15 at 13:21
• Small corrections: In English we would not say "uneven"; that's for surfaces not quite flat or smooth. It's Lorenz: Lorentz was a different person altogether. Key point: You are correct: bar charts with touching unequal width bars do not have to be ordered. But they are not of much use or interest without an ordering of some kind. Jun 29 '15 at 13:24
• @NickCox Lorenz - fixed (I can never remember, same Schwar(t)z). Well, there are other orderings, which make sense (e.g. as in the example 1); or there may be no ordering if there are only a few values. Is "variable bases" OK? Jun 29 '15 at 13:31
• Kaiser Fung points out the shortcomings of that GDP chart in his junkcharts blog and a follow-up post.
– xan
Jun 30 '15 at 12:55