PostGIS 1.5.8 Manual - Fedora Project Packages GIT repositories

PostGIS 1.5.8 Manual151 / 310NoteThe WKT spec does not include the SRID. To get the SRID as part of the data, use the non-standard PostGISST_AsEWKTWKT format does not maintain precision so to prevent floating truncation, use ST_AsBinary or ST_AsEWKB format fortransport.NoteST_AsText is the reverse of ST_GeomFromText.ST_AsText representation.Use ST_GeomFromText to convert to a postgis geometry fromAvailability: 1.5 - support for geography was introduced.This method implements the OpenGIS Simple Features Implementation Specification for SQL 1.1. s2.1.1.1This method implements the SQL/MM specification. SQL-MM 3: 5.1.25This method supports Circular Strings and CurvesExamplesSELECT ST_AsText(’01030000000100000005000000000000000000000000000000000000000000000000000000000000000000F03F000000000000F03F000000000000F03F000000000000F03F000000000000000000000000000000000000000000000000’);st_astext--------------------------------POLYGON((0 0,0 1,1 1,1 0,0 0))(1 row)See AlsoST_AsBinary, ST_AsEWKB, ST_AsEWKT, ST_GeomFromText7.7 Operators7.7.1 &&&& — Returns TRUE if A’s bounding box overlaps B’s.Synopsisboolean &&( geometry A , geometry B );boolean &&( geography A , geography B );