This function calculates the center of mass (geometric centroid) for each feature. Uses turf.centerOfMass which provides more accurate centroids than turf.centroid, matching the behavior of sf::st_centroid() and PostGIS ST_Centroid. The result is added as a source to the map, which can then be styled using add_circle_layer(), etc.
turf_center_of_mass(
map,
layer_id = NULL,
data = NULL,
coordinates = NULL,
source_id,
input_id = NULL
)The map or proxy object for method chaining.
A mapboxgl, maplibre, mapboxgl_proxy, or maplibre_proxy object.
The ID of a layer or source (mutually exclusive with data and coordinates).
An sf object (mutually exclusive with layer_id and coordinates).
A list of coordinate pairs list(c(lng,lat), c(lng,lat), ...) for multiple points (mutually exclusive with layer_id and data).
The ID for the new source containing the center of mass points. Required.
Optional. Character string specifying the Shiny input ID suffix for storing results. If NULL (default), no input is registered. For proxy operations, the result will be available as input[[paste0(map_id, "_turf_", input_id)]].