[OSM-talk-fr] Pour ceux qui aiment la technique: PostGIS 1.5.0 Released

Emilie Laffray emilie.laffray at gmail.com
Jeu 4 Fév 18:25:22 GMT 2010


Postgis 1.5 vient de sortir. L'apport majeur de cette version est le
support geodesique. Il devient maintenant plus facile de faire des
calculs de distance en metre grace au nouveau type geography au lieu du
type geometry.
Cela veut dire que l'on va enfin avoir des versions fiables du nombre de
km de route dans OSM sans tenir compte de la projection.
L'autre chose assez interessante est l'ajout d'un systeme de calcul de
similarite de geometries. Cela va permettre normalement de belles choses.

Emilie Laffray

-------- Original Message --------
Subject: 	[postgis-users] PostGIS 1.5.0 Released
Date: 	Thu, 4 Feb 2010 10:16:55 -0800
From: 	Paul Ramsey <pramsey at opengeo.org>
Reply-To: 	PostGIS Users Discussion <postgis-users at postgis.refractions.net>
To: 	PostGIS Users Discussion <postgis-users at postgis.refractions.net>,
PostGIS Development Discussion <postgis-devel at postgis.refractions.net>,
GEOS Development List <geos-devel at lists.osgeo.org>,
pgsql-announce at postgresql.org, mapserver-users
<mapserver-users at lists.osgeo.org>



February 4, 2010

The PostGIS development team has, after a long course of reflection
and a detailed self-examination of our various personal failings,
decided to release PostGIS 1.5.0 to the public.

  http://postgis.org/download/postgis-1.5.0.tar.gz

This new version of PostGIS includes a new "geography" type for
managing geodetic (lat/lon) data, performance-enhanced distance
calculations, GML and KML format readers, an improved shape loading
GUI, and other new features as well.

Especial thanks to:

* Dave Skea for algorithms and mathematics necessary to support
spherical geometry
* Nicklas Avén for the new performance enhanced distance calculations
and other distance-related functions
* Sandro Santilli for new buffering features (end caps and style options)
* Olivier Courtin for GML/KML input functions
* Guillaume Lelarge for support for the upcoming PgSQL 9.0
* George Silva for an example implementation of history tables
* Vincent Picavet for Hausdorff distance calculations
* The maintainers of GEOS, Proj4, and LibXML, without whom we would
have less of a spatial database

Love, the PostGIS project steering committee,

Mark Cave-Ayland
Kevin Neufeld
Regina Obe
Paul Ramsey


----- Release Notes ----

PostGIS 1.5.0
2010/02/04

  * Important Changes *

  - =~ operator now indicates bounding box equality, not feature equality
  - GEOS 3.1 is now the minimum accepted version of GEOS
  - GEOS 3.2 is needed if you want to use enhanced buffering features
    and ST_HausdorffDistance
  - GEOS, LibXML2, and Proj4 are now mandatory dependencies

  * New Features *

  - Added Hausdorff distance calculations (#209) (Vincent Picavet)
  - Added parameters argument to ST_Buffer operation to support one-sided
    buffering and other buffering styles (Sandro Santilli)
  - Performance improvements to ST_Distance (Nicklas Avén)
  - Addition of other Distance related visualization and analysis
    functions (Nicklas Avén)
    - ST_ClosestPoint
    - ST_DFullyWithin
    - ST_LongestLine
    - ST_MaxDistance
    - ST_ShortestLine
  - KML, GML input via ST_GeomFromGML and ST_GeomFromKML (Olivier Courtin)
  - Extract homogeneous collection with ST_CollectionExtract (Paul Ramsey)
  - Add measure values to existing linestring with ST_AddMeasure (Paul Ramsey)
  - History table implementation in utils (George Silva)
  - Win32 support and improvement of core shp2pgsql-gui (Mark Cave-Ayland)
  - In place 'make check' support (Paul Ramsey)
  - Geography type and supporting functions
    - Spherical algorithms from Dave Skea
    - Object/index implementation from Paul Ramsey
    - Selectivitiy implementation from Mark Cave-Ayland
    - Serializations (KML, GML, JSON) from Olivier Courtin
    - ST_Area, ST_Distance, ST_DWithin, ST_GeogFromText, ST_GeogFromWKB,
      ST_Intersects, ST_Covers, ST_Buffer
  - Documentation updates and improvements (Regina Obe, Kevin Neufeld)
  - Testing and quality control (Regina Obe)
  - PostGIS 1.5 support PostgreSQL 8.5 trunk (Guillaume Lelarge)
   - Many many other changes:
    http://trac.osgeo.org/postgis/query?status=closed&milestone=PostGIS+1.5.0
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