List of available polygons for id = 63503

params ▾	timestamp	NPoints	Length	WKT	GeoJSON	poly	Image
0	2025-01-10 17:58:48.557676	912	0.130818527867768	WKT	GeoJSON	poly	image
0.000100-0.001000-0.001000	2025-01-10 18:08:54.630316	396	0.130838526847601	WKT	GeoJSON	poly	image
-0.002000-0.001000-0.001000	2025-01-10 18:09:50.688138	52	0.125195846576473	WKT	GeoJSON	poly	image
0.004000-0.001000-0.001000	2025-01-10 18:08:32.945913	47	0.139517024050827	WKT	GeoJSON	poly	image
0.009000-0.001000-0.001000	2025-01-10 18:09:17.143708	45	0.149893295380411	WKT	GeoJSON	poly	image

Generate a simplified polygon

X, Y, Z are parameters for the following postgis equation. The default values are chosen according to the size of the original geometry to give a slighty bigger geometry, without too many nodes.

Note that:

X > 0 will give a polygon bigger than the original geometry, and guaranteed to contain it.
X = 0 will give a polygon similar to the original geometry.
X < 0 will give a polygon smaller than the original geometry, and guaranteed to be smaller.

SQL requests:

X > 0: ST_Union(ST_MakeValid(ST_SimplifyPreserveTopology(geom, 0.00001)), ST_Buffer(ST_SimplifyPreserveTopology(ST_SnapToGrid(ST_Buffer(geom, X), Y), Z)))
X = 0: ST_Buffer(ST_SimplifyPreserveTopology(ST_SnapToGrid(ST_Buffer(geom, X), Y), Z)))
X < 0: ST_Intersection(geom, ST_Buffer(ST_SimplifyPreserveTopology(ST_SnapToGrid(ST_Buffer(geom, X), Y), Z)))