Add points so no segment exceeds a length — ga

Densifies linestrings, multilinestrings, polygons, and multipolygons by inserting additional points along each segment until no segment exceeds max_segment_length. The metric determines how segment length is measured.

Usage

ga_densify(geometry, max_segment_length, metric)

Arguments

geometry: a GeoArrow linestring, multilinestring, polygon, or multipolygon array
max_segment_length: the maximum segment length; either length 1 or the same length as geometry
metric: one of "euclidean", "haversine", "geodesic", or "rhumb"

Value

a GeoArrow array of the same geometry type as the input

References

Densifiable

Examples

line <- geoarrow::as_geoarrow_array(sf::st_sfc(
  sf::st_linestring(rbind(c(0, 0), c(10, 0)))
))

# a 10 unit segment capped at 2 units needs four new vertices
as.vector(ga_n_coords(line))
#> [1] 2
as.vector(ga_n_coords(ga_densify(line, 2, "euclidean")))
#> [1] 6