PostGIS

ST_Scroll

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8.5. Geometry Editors

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Name

ST_Scroll — Change start point of a closed LineString.

Synopsis

geometry +`*`+ST_Scroll*(`geometry `linestring, geometry point`)`;

Description

Changes the start/end point of a closed LineString to the given vertex `point`.

Availability: 3.2.0

check This function supports 3d and will not drop the z-index.

check This function supports M coordinates.

Examples

Make e closed line start at its 3rd vertex

SELECT ST_AsEWKT(ST_Scroll('SRID=4326;LINESTRING(0 0 0 1, 10 0 2 0, 5 5 4 2,0 0 0 1)', 'POINT(5 5 4 2)'));

st_asewkt
----------
SRID=4326;LINESTRING(5 5 4 2,0 0 0 1,10 0 2 0,5 5 4 2)

See Also

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ST_CurveToLine

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ST_FlipCoordinates