Map the data availability itself

A choropleth of whether a value is present, rather than what it is. The companion to audit_coverage(), which reports the same thing as a table: a world map with a large well-covered region and a systematically empty one is telling you something about the indicator that the headline map hides behind a uniform grey.

Usage

coverage_map(data, value, by = NULL, title = NULL, ...)

Arguments

data

A map-ready frame (polygon or sf).

value

The column whose availability to map (unquoted).

by

Optional grouping column for a panel: with a year column, use by = year to see coverage change over time.

title

Optional plot title (defaults to a generated one).

...

Passed to world_map().

Value

A ggplot object.

Backend

Either backend, as world_map(): the frame decides, and both draw in Equal Earth unless projection is passed on through ....

See also

audit_coverage(), world_map()

Examples

# \donttest{
snap <- countryatlas::world_snapshot$countries
attach_geometry(snap, geometry = "polygon") |>
  coverage_map(gdp_per_capita)

# }