ST_SetPoint

Introduction: Replace Nth point of linestring with given point. Index is 0-based. Negative index are counted backwards, e.g., -1 is last point.

Format: ST_SetPoint (linestring: Geometry, index: Integer, point: Geometry)

Return type: Geometry

Since: v1.3.0

SQL Example

SELECT ST_SetPoint(ST_GeomFromText('LINESTRING (0 0, 0 1, 1 1)'), 2, ST_GeomFromText('POINT (1 0)'))

Output:

LINESTRING (0 0, 0 1, 1 0)