This topic describes the ST_GeogFromWKB function. This function constructs a geography object by using a standard Well-Known Binary (WKB) string or an Extended Well-Known Binary (EWKB) string.
Syntax
geography ST_GeogFromWKB(bytea wkb);
Parameters
Parameter | Description |
---|---|
wkb | The standard WKB string or EWKB string that you want to specify. |
Description
- If you do not specify a spatial reference identifier (SRID), the default SRID 4326 is used.
- This function supports circular strings and curves.
Examples
SELECT ST_AsText(ST_GeogFromWKB(E'\\x01010000000000000000005d400000000000004440'));
st_astext
---------------
POINT(116 40)
(1 row)