fortify.map {ggplot2} | R Documentation |
Fortify method for map objects
fortify.map(model, data, ...)
model |
map object |
data |
ignored |
... |
ignored |
This function turns a map into a data frame than can more easily be plotted with ggplot2.
Hadley Wickham <h.wickham@gmail.com>
if (require(maps)) { ca <- map_data("county", "ca") qplot(long, lat, data = ca, geom="polygon", group = group) tx <- map_data("county", "texas") qplot(long, lat, data = tx, geom="polygon", group = group, colour = I("white")) }