Two-variable bivariate choropleth — bivariate_map • countryatlas

A 2-D bivariate choropleth with a built-in 2-D legend (via the optional biscale package), e.g. GDP per capita x life expectancy in one map.

Usage

bivariate_map(
  data,
  fill_x,
  fill_y,
  palette = "GrPink",
  dim = 3,
  projection = "equal_earth"
)

Arguments

data: An sf map-ready frame (use geometry = "sf").
fill_x, fill_y: The two value columns (unquoted).
palette: A biscale palette name (default "GrPink").
dim: Bivariate dimension (2 or 3, default 3).
projection: Projection; see world_map() for the ones available.

Value

A ggplot object (the map; combine with biscale::bi_legend() for a standalone legend).

Examples

# \donttest{
if (requireNamespace("sf", quietly = TRUE) &&
    requireNamespace("rnaturalearth", quietly = TRUE) &&
    requireNamespace("biscale", quietly = TRUE)) {
  attach_geometry(countryatlas::world_snapshot$countries, geometry = "sf") |>
    bivariate_map(gdp_per_capita, life_expectancy)
}

# }