Graphics Reference
In-Depth Information
)
}
Then add it to the map (
Figure 13-38
). In this example, we'll add it to one of the choropleths we
created in
Creating a Choropleth Map
:
ggplot(crimes, aes(map_id
=
state, fill
=
Assault_q))
+
geom_map(map
=
states_map, colour
=
"black"
)
+
scale_fill_manual(values
=
pal)
+
expand_limits(x
=
states_map$long, y
=
states_map$lat)
+
coord_map(
"polyconic"
)
+
labs(fill
=
"Assault Rate\nPercentile"
)
+
theme_clean()