ST_MinimumClearanceLine¶

Returns a LineString representing the minimum clearance distance of the input geometry.

Usage¶

geometry ST_MinimumClearanceLine(geom: geometry)

Arguments¶

geom (geometry): Input geometry

Description¶

This function returns a two-point LineString geometry representing the minimum clearance distance of the input geometry. If the input geometry does not have a defined minimum clearance, such as for single Points or coincident MultiPoints, an empty LineString geometry is returned instead.

Examples¶

SELECT ST_MinimumClearanceLine(
  ST_GeomFromWKT('POLYGON ((65 18, 62 16, 64.5 16, 62 14, 65 14, 65 18))')
);

┌──────────────────────────────────────────────────────────────────────────────┐
│ st_minimumclearanceline(st_geomfromwkt(Utf8("POLYGON ((65 18, 62 16, 64.5 16 │
│                         , 62 14, 65 14, 65 18))")))…                         │
╞══════════════════════════════════════════════════════════════════════════════╡
│ LINESTRING(64.5 16,65 16)                                                    │
└──────────────────────────────────────────────────────────────────────────────┘