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| |
| # ST_Envelope |
| |
| Introduction: This function returns the bounding box (envelope) of A. It's important to note that the bounding box is calculated using a cylindrical topology, not a spherical one. If the envelope crosses the antimeridian (the 180° longitude line), you can set the split parameter to true. This will return a Geography object containing two separate Polygon objects, split along that line. |
| |
| Format: |
| |
| `ST_Envelope (A: Geography, splitAtAntiMeridian: Boolean)` |
| |
| Return type: `Geography` |
| |
| Since: `v1.8.0` |
| |
| SQL Example |
| |
| ```sql |
| SELECT ST_Envelope(ST_GeogFromWKT('MULTIPOLYGON (((177.285 -18.28799, 180 -18.28799, 180 -16.02088, 177.285 -16.02088, 177.285 -18.28799)), ((-180 -18.28799, -179.7933 -18.28799, -179.7933 -16.02088, -180 -16.02088, -180 -18.28799)))'), false); |
| ``` |
| |
| Output: |
| |
| ``` |
| POLYGON ((177.3 -18.3, -179.8 -18.3, -179.8 -16, 177.3 -16, 177.3 -18.3)) |
| ``` |
