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