Publish vector features as PMTiles (tippecanoe)

Writes an sf (or an existing vector file) to PMTiles via tippecanoe, keeping every feature (no dropping) so a source dataset's ranges can be filtered client-side by an attribute (e.g. mdl_key). Reprojects to EPSG:4326 first.

Usage

publish_pmtiles(
  x,
  out_pmtiles,
  layer,
  minzoom = 0,
  maxzoom = 6,
  simplification = 20,
  tippecanoe = "tippecanoe",
  extra = character(0),
  quiet = TRUE
)

Arguments

x

an sf object, or a path to a vector file tippecanoe can read (FlatGeobuf / GeoJSON)

out_pmtiles

output path (.pmtiles)

layer

tile layer name (the source_layer the app references)

minzoom, maxzoom

zoom range (default 0..6; coarse expert ranges don't need street-level detail, and high zoom on huge global polygons is very slow)

simplification

tippecanoe --simplification (default 10; aggressive, since ranges are coarse — keeps tiles small without dropping species)

tippecanoe

path to the tippecanoe binary (default "tippecanoe")

extra

extra tippecanoe CLI args (character vector)

quiet

suppress tippecanoe stderr (default TRUE)

Value

out_pmtiles (invisibly)