New Feature request - question: Bivariate choropleth?

[ozak]

It would be great to be able to create bivariate choropleths using geoplot? Has anyone done so or are there plans to include a function to do it? Something like Pysal's vba function? I have found some code examples (here, here, here, here), but no one has used geoplot. I guess assigning colors to a column based on deciles/quartiles and then using those as hue may work? Then adding the special legend?