Coordinate operations

transform(geometry, transformation[, include_z])	Returns a copy of a geometry array with a function applied to its coordinates.
count_coordinates(geometry)	Counts the number of coordinate pairs in a geometry array.
get_coordinates(geometry[, include_z, ...])	Gets coordinates from a geometry array as an array of floats.
set_coordinates(geometry, coordinates)	Adapts the coordinates of a geometry array in-place.