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Fortify method for map objects

Source: R/fortify-map.R
fortify.map.Rd

[Deprecated]

This function turns a map into a data frame that can more easily be plotted with ggplot2.

Usage

# S3 method for class 'map'
fortify(model, data, ...)

Arguments

model

map object

data

not used by this method

...

not used by this method

See also

map_data() and annotation_borders()

Examples

if (require("maps")) {
ca <- map("county", "ca", plot = FALSE, fill = TRUE)
head(fortify(ca))
ggplot(ca, aes(long, lat)) +
  geom_polygon(aes(group = group))
}
#> Warning: `fortify(<map>)` was deprecated in ggplot2 3.6.0.
#> ℹ Please use `map_data()` instead.


if (require("maps")) {
tx <- map("county", "texas", plot = FALSE, fill = TRUE)
head(fortify(tx))
ggplot(tx, aes(long, lat)) +
  geom_polygon(aes(group = group), colour = "white")
}