Geographies and geometries   Some vendors distinguish spatial objects by whether they are geographies (pertaining to objects on a round-Earth) or geometries (objects on a plane or a flat-Earth). In SQL Anywhere, all spatial objects are considered to be geometries, and the object's SRID indicates whether it is being operated on in a round-Earth or flat-Earth (planar) spatial reference system.

Unsupported methods  

• ST_Buffer method
• ST_LocateAlong method
• ST_LocateBetween method
• ST_Segmentize method
• ST_Simplify method
• ST_Distance_Spheroid method
• ST_Length_Spheroid method