Description Usage Arguments See Also Examples
This function turns a map into a data frame that can more easily be plotted with ggplot2.
1 2 |
model |
map object |
data |
not used by this method |
... |
not used by this method |
1 2 3 4 5 6 7 8 9 10 11 | if (require("maps")) {
ca <- map("county", "ca", plot = FALSE, fill = TRUE)
head(fortify(ca))
ggplot(ca, aes(long, lat)) +
geom_polygon(aes(group = group))
tx <- map("county", "texas", plot = FALSE, fill = TRUE)
head(fortify(tx))
ggplot(tx, aes(long, lat)) +
geom_polygon(aes(group = group), colour = "white")
}
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