ll_match: Matches a data frame with longitude and latitude to an sf...

In giocomai/latlon2map: Facilitates matching lat/lon data with administrative units and other geographic shapes

Matches a data frame with longitude and latitude to an sf object

Description

Matches a data frame with longitude and latitude to an sf object

Usage

ll_match(
  data,
  longitude = 1,
  latitude = 2,
  join = sf::st_intersects,
  sample = NULL,
  match = longlat2map::ll_get_world()
)

Arguments

data	A data frame or tibble with a column for longitude and one for latitude or an onject of the sf class. If an sf object is given, the longitude and latitude parameters are ignored.
longitude	The exact column name or the column index (e.g. 1 if first column) for longitude. Defaults to 1.
latitude	The exact column name or the column index (e.g. 1 if first column) for latitude. Defaults to 2.
join	A function of the sf class determining the type of join. Defaults to sf::st_intersects. Check ?sf::st_join for alternatives.
sample	Defaults to NULL. If given, it runs the matching with only a subset of the original dataframe. Suggested for testing in particular when working with big datasets.
match	An sf object to be matched with the given dataframe, defaults to longlat2map::ll_get_world(). This package facilitate obtaining alternative reference maps with functions such as longlat2map::ll_get_nuts_eu() and longlat2map::ll_get_nuts_us()

Value

An sf object with CRS 4326.

giocomai/latlon2map documentation built on Oct. 14, 2024, 12:52 a.m.