Given that you called them facets, I'm going to assume you're familiar with ggplot2. In retrospect, I thinking adding non-Cartesian coordinate systems was a mis

Given that you called them facets, I'm going to assume you're familiar with ggplot2. In retrospect, I thinking adding non-Cartesian coordinate systems was a mistake. They are a huge amount of work and only make a handful of charts easier (and most of which, like the radar chart, are not that useful).