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| |
| # ST_Simplify |
| |
| Introduction: This function simplifies the input geometry by applying the Douglas-Peucker algorithm. |
| |
|  |
| |
| !!!Note |
| The simplification may not preserve topology, potentially producing invalid geometries. Use [ST_SimplifyPreserveTopology](ST_SimplifyPreserveTopology.md) to retain valid topology after simplification. |
| |
| Format: `ST_Simplify(geom: Geometry, tolerance: Double)` |
| |
| Return type: `Geometry` |
| |
| SQL Example: |
| |
| ```sql |
| SELECT ST_Simplify(ST_Buffer(ST_GeomFromWKT('POINT (0 2)'), 10), 1) |
| ``` |
| |
| Output: |
| |
| ``` |
| POLYGON ((10 2, 7.0710678118654755 -5.071067811865475, 0.0000000000000006 -8, -7.071067811865475 -5.0710678118654755, -10 1.9999999999999987, -7.071067811865477 9.071067811865476, -0.0000000000000018 12, 7.071067811865474 9.071067811865477, 10 2)) |
| ``` |
