concaveman function ports the concaveman library from mapbox. It computes the concave polygon for one set of points.
concaveman(points, concavity, length_threshold) # S3 method for matrix concaveman(points, concavity = 2, length_threshold = 0) # S3 method for sf concaveman(points, concavity = 2, length_threshold = 0)
the points for which the concave hull must be computed. Can be represented as a matrix of coordinates or an
a relative measure of concavity. 1 results in a relatively detailed shape, Infinity results in a convex hull. You can use values lower than 1, but they can produce pretty crazy shapes.
when a segment length is under this threshold, it stops being considered for further detalization. Higher values result in simpler shapes.
an object of the same class as
points: a matrix of coordinates or an
plot(polygons, add = TRUE)