ST_AsSVG-ApsaraDB RDS(RDS)-阿里云帮助中心

Returns the Scalable Vector Graphics (SVG) path data for a geometry or geography object.

Syntax

text ST_AsSVG(geometry geom, integer rel, integer maxdecimaldigits);
text ST_AsSVG(geography geog, integer rel, integer maxdecimaldigits);

Parameter	Type	Default	Description
`geom`	geometry	—	The geometry object to convert.
`geog`	geography	—	The geography object to convert.
`rel`	integer	0	Controls the path coordinate mode. `0` uses absolute moves; `1` uses relative moves.
`maxdecimaldigits`	integer	15	Maximum number of decimal digits in coordinate values.

Point geometry (default absolute moves)

SELECT ST_AsSVG(ST_GeomFromText('POINT(116 40)', 4326));

Output:

     st_assvg
-------------------
 cx="116" cy="-40"
(1 row)