Currently, you can only facet on one variable. ggplot supports facet_grid, which allows faceting on two variables. For example, in the case of socviz Fig 4.5:
This likely would require a refactor of the layout engine for facets (see #1), or at the very least the ability to represent titles and labels as picts and add them after plotting.
Currently, you can only facet on one variable. ggplot supports
facet_grid, which allows faceting on two variables. For example, in the case of socviz Fig 4.5:This likely would require a refactor of the layout engine for facets (see #1), or at the very least the ability to represent titles and labels as picts and add them after plotting.