PostGIS

ST_AsHEXEWKB

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8.9.2. Well-Known Binary (WKB)

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Name

ST_AsHEXEWKB — Returns a Geometry in HEXEWKB format (as text) using either little-endian (NDR) or big-endian (XDR) encoding.

Synopsis

text +`*`+ST_AsHEXEWKB*(`geometry `g1, text NDRorXDR`)`;

text +`*`+ST_AsHEXEWKB*(`geometry `g1`)`;

Description

Returns a Geometry in HEXEWKB format (as text) using either little-endian (NDR) or big-endian (XDR) encoding. If no encoding is specified, then NDR is used.

Note

Availability: 1.2.2

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

check This method supports Circular Strings and Curves

Examples

SELECT ST_AsHEXEWKB(ST_GeomFromText('POLYGON((0 0,0 1,1 1,1 0,0 0))',4326));
        which gives same answer as

        SELECT ST_GeomFromText('POLYGON((0 0,0 1,1 1,1 0,0 0))',4326)::text;

        st_ashexewkb
        --------
        0103000020E6100000010000000500
        00000000000000000000000000000000
        00000000000000000000000000000000F03F
        000000000000F03F000000000000F03F000000000000F03
        F000000000000000000000000000000000000000000000000

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