Small-multiple choropleths — facet

Facet a choropleth into small multiples (one panel per group or per year) – the static counterpart to animate_world(), for print and side-by-side comparison. Builds a world_map() and facets it on facet.

Usage

facet_map(data, fill, facet, ncol = NULL, ...)

Arguments

data: A map-ready frame (polygon or sf) containing the facet column.
fill: The fill column (unquoted).
facet: The faceting column (unquoted; e.g. year or continent).
ncol: Number of facet columns (passed to ggplot2::facet_wrap()).
...: Passed to world_map() (e.g. style, projection).

Value

A faceted ggplot object.

Examples

# \donttest{
snap <- countryatlas::world_snapshot$countries
if (requireNamespace("maps", quietly = TRUE)) {
  mapdf <- attach_geometry(snap, geometry = "polygon")
  facet_map(mapdf, gdp_per_capita, continent, style = "quantile")
}

# }