om_get: Get map layers

In maposm: Get Map Layers from 'OpenStreetMap'

Get map layers

Description

Download various OpenStreetMap features to create map layers.

Usage

om_get(
  x,
  r,
  download_directory = tempdir(),
  force_download = FALSE,
  max_file_size = 20,
  force_building = FALSE,
  quiet = FALSE
)

Arguments

x	an sf or sfc object, or a couple of coordinates (lon/lat, EPSG:4326)
r	radius of the extraction if x is an sf POINT or a couple of coordinates
download_directory	directory to store the file containing raw OpenStreetMap data
force_download	if TRUE, the OpenSteetMap file is updated even if it has already been downloaded.
max_file_size	the maximum file size to download without asking in interactive mode, in megabytes (default to 20 MB)
force_building	force the extraction of buildings in zones larger than 20 km²
quiet	if FALSE, the function prints informative messages

Value

A list of map layers is returned :

• zone, the extraction zone;

• urban, urban areas;

• building, buildings (if the extraction zone area is below 20 km² or force_building = TRUE);

• green, green spaces;

• road, main roads;

• street, secondary roads;

• railway, railways (line);

• water, water bodies

If x uses an unprojected CRS (lon/lat, EPSG:4326), ouput uses Web Mercator CRS (EPSG:3857), it uses x CRS otherwise.

Examples

res = om_get(c(-61.070, 14.605), r = 600)
om_map(res, title = "Fort-de-France town centre")

maposm documentation built on Sept. 17, 2026, 5:08 p.m.