ST_GeogFromWKB
Name
ST_GeogFromWKB — Creates a geography instance from a Well-Known Binary geometry representation (WKB) or extended Well Known Binary (EWKB).
Synopsis
geography
ST_GeogFromWKB
(
bytea
wkb
)
;
Description
The
ST_GeogFromWKB
function, takes a well-known
binary representation (WKB) of a geometry or PostGIS Extended WKB and creates an instance of the appropriate
geography type. This function plays the role of the Geometry Factory in
SQL.
If SRID is not specified, it defaults to 4326 (WGS 84 long lat).
This method supports Circular Strings and Curves.
Examples
--Although bytea rep contains single \, these need to be escaped when inserting into a table SELECT ST_AsText( ST_GeogFromWKB(E'\\001\\002\\000\\000\\000\\002\\000\\000\\000\\037\\205\\353Q\\270~\\\\\\300\\323Mb\\020X\\231C@\\020X9\\264\\310~\\\\\\300)\\\\\\217\\302\\365\\230C@') ); st_astext ------------------------------------------------------ LINESTRING(-113.98 39.198,-113.981 39.195) (1 row)