List of available polygons for id = 421007

params ▾	timestamp	NPoints	Length	WKT	GeoJSON	poly	Image
0	2025-01-07 19:09:45.280736	3029	0.562318423578039	WKT	GeoJSON	poly	image
0.000200-0.000200-0.000200	2025-01-07 19:52:18.080716	766	0.562842571239953	WKT	GeoJSON	poly	image
0.004000-0.001000-0.001000	2025-01-07 19:52:15.144970	228	0.5706461250197	WKT	GeoJSON	poly	image
0.008000-0.001000-0.001000	2025-01-14 16:10:32.943885	189	0.578441008228152	WKT	GeoJSON	poly	image
0.010000-0.010000-0.010000	2025-01-07 19:52:20.076907	54	0.588727441181402	WKT	GeoJSON	poly	image
0.030000-0.030000-0.030000	2025-02-14 20:45:26.512315	18	0.630713881248861	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)))