Retrieve administrative boundary polygons around an area

Builds a convex buffer around the input geometry, retrieves commune boundaries from BDTOPO, normalizes them, and returns a polygon layer.

Usage

get_com_poly(x, buffer = 2000, verbose = TRUE)

Arguments

x

An sf object used as the input area.

buffer

numeric; Buffer around x (in meters) used to enlarge

verbose

logical If TRUE, display messages.

Value

An sf object of type POLYGON containing commune boundaries, with standardized fields as defined by seq_normalize("com_poly"). Returns NULL if no commune intersects the search area.

Details

The function builds a 2000 m convex buffer around x, retrieves the BDTOPO commune layer (BDTOPO_V3:commune) intersecting this buffer, and normalizes the resulting geometries and attributes.