postgis/CHANGES

PostGIS 0.7.3
2002/09/05

- Bug Fixes
  - Stupid bug in .sql install script breaks install for
    many. Squashed. New release needed.
  - Automatic version detection for appropriate GiST bindings
  - postgis_transform now supports box3d types as well as geometry

PostGIS 0.7.2
2002/09/01

- Bug Fixes
  - Numerous subtle bugs fixed in pgsql2shp and shp2pgsql DBF and
    SHP file handling
  - Some pgsql 7.3 preparations
  - Patch to truly_inside() corner case
  - Updates to the ~ and @ operators
  - Update to translate() function to also translate bbox

PostGIS 0.7.1
2002/05/14

- Bug Fixes
  - PgSQL 7.2 RTree-over-GIST bug fix. Rare data cases
    caused index building to fail.
  - Carriage returns removed from source code. Were
    causing compilation failures.
  - collect() now returns simplest homogeneous type
    being aggregated (e.g.M ULTIPOLYGON for collect(*POLYGON))

PostGIS 0.7.0
2002/05/04

- New Things
  - transform() function provides coordinate reprojection 
    using proj4 library
  - spatial_ref_sys.sql has a complete set of proj4 
    definitions for each EPSG coordinate system
  - support for PostgreSQL 7.2 GiST index API
  - refactoring of source code to separate index support
    functions from other functions
  - max_distance() function
  - distance_spheroid() function
  - collect() aggregate function
  - xmin(),ymin(),zmin(),xmax(),ymax(),zmax() functions
- Bug Fixes
  - transform() more graceful when grid shifts are missing
  - setsrid() made cachable
  - patches to loader/dumper


PostGIS 0.6.2
2001/11/07

- New Things
  - spatial_ref_sys.sql complete set of SRID and WKT
  - generate postgis_undef.sql automatically at build
- Bug fixes
  - Memory problem in shp2pgsql
  - Compilation problems with shp2pgsql


PostGIS 0.6.1
2001/10/15

- Bug fixes
  - Cygwin compilation fix
  - Improved getopts handling in utility programs
  - Text casting fixes


PostGIS 0.6
2001/09/19

- New functions
  - postgis_version()
    Return the PostGIS version number.
  - find_srid(<db/schema>::varchar, <table>::varchar, <column>::varchar)
    Return the SRID number for a particular column of a database.
  - AddGeometryColumn(<db/schema>::varchar, <table>::varchar,
      <column>::varchar, <srid>::integer, <type>::varchar, 
      <dimension>::integer)
    Appends a geometry column to an existing table and updates the
    metadata tables appropriately.
  - DropGeometryColumn(<db/schema>::varchar, <table>::varchar, 
      <column>::varchar)
    Removes a geometry column from an existing spatial table.
  - Distance(<geom1>::geometry, <geom2>::geometry)
    Returns the cartesian distance between two geometries.
  - AsText(<geom>::geometry)
    Returns the OGC well-known text version of the geometry.
  - SRID(<geom>::geometry)
    Returns the integer SRID of the geometry.
  - GeometryFromText(<geom>::varchar, <srid>::integer)
    Creates a geometry object given the OGC well-known text and a valid
    SRID.
  - SetSRID(<geom>::geometry)
    Sets the SRID of a geometry to a particular value.
  - IsClosed(<geom>::geometry)
    Returns true of first and last points of geometry are coincident.
  - StartPoint(<geom>::geometry)
    Returns the first point of a geometry.
  - EndPoint(<geom>::geometry)
    Returns the last point of a geometry.
  - Centroid(<geom>::geometry)
    Returns the centroid of a geometry.
- More OpenGIS SFSQL compatibility
  - SPATIAL_REF_SYS table
  - GEOMETRY_COLUMNS table
  - SRID integrity checking
- Better Mapserver compatibility
- Minor fixes/changes
  - Support for WKB in the tables
  - Miscellaneous bug fixes
  - Placeholders for precision grid


PostGIS 0.5
2001/07/20

- New functions
  - Dimension()
  - GeometryType()
  - Envelope() 
  - X(), Y(), Z()
  - NumPoints()
  - PointN()
  - ExteriorRing()
  - NumInteriorRings()
  - InteriorRingN()
  - NumGeometries()
  - GeometryN()
  - Length_Spheroid()
  - Length3D_Spheroid()
  - AsBinary() + XDR and NDR variants
  - force_collection()
- Removed functions
  - wkb_ndr()
  - wkb_xdr()
- New Objects
  - SPHEROID(<NAME>,<SEMIMAJOR AXIS>,<INVERSE FLATTENING>)
    To be used with the length_spheroid functions for accurate
    length calculations on lat/lon data.
- Minor bug fixes
- Internal Functions
  - Extra constructors to make geometry manipulation easier
- Structural Reorganization
  - Broke postgis.c up into four new files
    postgis_debug.c -- debugging functions
    postgis_fn.c -- generic functions (like length())
    postgis_ops.c -- operators and indexing functions
    postgis_inout.c -- type support functions and data conversion functions


PostGIS 0.2
2001/06/19

- New functions
  - extent()
  - force_2d()
  - force_3d()
  - wkb_xdr()
  - wkb_ndr()
  - translate()
- Fixes
  - Cygwin compilation (Norman Vine)
  - i386 byte alignment fixed
  - 'VACUUM ANALYZE' fixed
- Other
  - documentation in docbook xml
  - example program for WKB access
  - removed 'make test' until we can get regression
    working more cleanly


PostGIS 0.1
2001/05/25

- Initial release!
- 'geometry' and 'box3d' types.
- Parsing routines for all possible geometries in OGIS text format 
  (POINT, LINESTRING, POLYGON, MULTIPOINT, MULTILINESTRING, MULTIPOLYGON,
  GEOMETRYCOLLECTION).
- Output routines for all possible geometries in OGIS text format.
- area2d(), area3d()
- length3d(), length3d()
- perimeter2d(), perimeter3d()
- truely_inside()
- rtree index support functions
- gist index support functions