PostGIS 2.0 Discussion Topics

• Serialization. GSERIALIZED structure. More things could be added: an optional hash code for fast identity checking on large objects; an optional user-data area where things like internal index trees could be serialized.
• Typmod implications.
• Changing the liblwgeom API
  • Modifiable pointarrays
  • GBOX as default bounding box
  • Documented and complete API for pointarray modification
  • Modifiable collections
  • Documented and complete API for collection modification
• Strategy for Curves
  • Uniform strategy for "implemented but not complete" types?
  • Plan for making curves more complete?
• Multi-dimensional indexing, what does the syntax and implementation look like?
• ​3D support for Polyhedral Surfaces, CityGML, Collada, X3D
  • implement in liblwgeom 3D primitives:
    • ST_IsValid
    • Point in Polyhedra test (and so others related 9DIM functions)
    • Polyhedra minimal distance (to a point also to an another polyhedra)
    • ST_Centroid
    • ST_Volume

• I/O functions
  • extensions to GML and KML
  • CityGML
  • Collada
  • X3D (yes please)