bi_class                Create Classes for Bivariate Maps
bi_legend               Create Object for Drawing Legend
bi_pal                  Palette Preview and Hex Values
bi_pal_manual           Create Manual Palette
bi_scale_color          Apply Bivariate Color to ggplot Object
bi_scale_fill           Apply Bivariate Fill to ggplot Object
bi_theme                Basic Theme for Bivariate Mapping
stl_race_income         Race and Median Income in St. Louis by Census
                        Tract, 2017
