Is there a method in shapely or a similar library that is exactly equivalent to postGIS method st_makevalid? As it stands, using .buffer(0) as recommended here is not enough. Are there any pure python implementations of this function? As it stands, I can access the postgis functions directly by binding from ctypes, but this is a cumbersome solution as I must compile and install from source. A better solution would be very welcome.
1 Answers
Shapely >=1.8 has this feature. See the docs here.
from shapely.geometry import Polygon
from shapely.validation import make_valid
invalid_poly = Polygon([(0, 2), (0, 1), (2, 0), (0, 0), (0, 2)])
valid_poly = make_valid(invalid_poly)
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