params ▾ | timestamp | NPoints | Length | WKT | GeoJSON | poly | Image |
---|---|---|---|---|---|---|---|

0 | 2018-02-13 10:09:26.275239 | 675 | 0.192692737581 | WKT | GeoJSON | poly | image |

0.004000-0.001000-0.001000 | 2018-03-21 00:02:41.898265 | 89 | 0.200960195064 | WKT | GeoJSON | poly | image |

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.

ST_Simplify(ST_SnapToGrid(ST_Buffer(geom, X), Y), Z))