List of available polygons for id = 27768

params ▾	timestamp	NPoints	Length	WKT	GeoJSON	poly	Image
0	2024-12-27 20:54:42.534065	31408	3.02753379162513	WKT	GeoJSON	poly	image
0.002000-0.000500-0.000500	2025-05-19 22:46:14.487502	3440	3.03182539899645	WKT	GeoJSON	poly	image
0.020000-0.005000-0.005000	2025-05-19 22:46:04.265679	385	3.06726262325221	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)))