发布于 2017-10-04 21:50:02 | 168 次阅读 | 评论: 0 | 来源: 网友投递
PostGIS PostgreSQL空间数据存储扩展
PostGIS在对象关系型数据库PostgreSQL上增加了存储管理空间数据的能力，相当于Oracle的spatial部分。PostGIS最大的特点是符合并且实现了OpenGIS的一些规范，是最著名的开源GIS数据库。
PostGIS 2.4.0 已发布，PostGIS 在对象关系型数据库 PostgreSQL 上增加了存储管理空间数据的能力，相当于 Oracle 的 spatial 部分。PostGIS 最大的特点是符合并且实现了 OpenGIS 的一些规范，是最著名的开源GIS数据库。
新特性
3822, Have postgisfullversion() also show and check version of PostgreSQL the scripts were built against (Sandro Santilli)
2411, curves support in ST_Reverse (Sandro Santilli)
2951, ST_Centroid for geography (Danny Götte)
3788, Allow postgis_restore.pl to work on directory-style (-Fd) dumps (Roger Crew)
3772, Direction agnostic ST_CurveToLine output (Sandro Santilli / KKGeo)
2464, ST_CurveToLine with MaxError tolerance (Sandro Santilli / KKGeo)
3599, Geobuf output support via ST_AsGeobuf (Björn Harrtell)
3661, Mapbox vector tile output support via ST_AsMVT (Björn Harrtell / Carto)
3689, Add orientation checking and forcing functions (Dan Baston)
3753, Gist penalty speed improvements for 2d and nd points (Darafei Praliaskouski)
3677, ST_FrechetDistance (Shinichi Sugiyama)
Most aggregates (raster and geometry), and all stable / immutable (raster and geometry) marked as parallel safe
2249, ST_MakeEmptyCoverage for raster (David Zwarg, ainomieli)
3709, Allow signed distance for ST_Project (Darafei Praliaskouski)
524, Covers support for Polygon-on-polygon, line on line, point on line for geography (Danny Götte)
改进
Support for PostgreSQL 10
3645, Avoid loading logically deleted records from shapefiles
3747, Add zip4 and addressalphanumeric as attributes to normaddy tiger_geocoder type.
3748, addressstandardizer lookup tables update so pagcnormalize_address better standardizes abbreviations
3647, better handling of noding in ST_Node using GEOSNode (Wouter Geraedts)
3684, Update to EPSG register v9 (Even Rouault)
3830, Fix initialization of incompatible type (>=9.6) address_standardizer
3662, Make shp2pgsql work in debug mode by sending debug to stderr
3405, Fixed memory leak in lwgeomtopoints
3832, Support wide integer fields as int8 in shp2pgsql
3841, Deterministic sorting support for empty geometries in btree geography
3844, Make = operator a strict equality test, and < > to rough “spatial sorting”
3855, ST_AsTWKB memory and speed improvements
重要改变
Dropped support for PostgreSQL 9.2.
3810, GEOS 3.4.0 or above minimum required to compile
Most aggregates now marked as parallel safe, which means most aggs have to be dropped / recreated. If you have views that utilize PostGIS aggs, you’ll need to drop before upgrade and recreate after upgrade
B-Tree index operators < = > changed to provide better spatial locality on sorting and have expected behavior on GROUP BY. It now works on exact geometry instead of bounding box. If you have btree index for geometry or geography, you need to REINDEX it, or review if it was created by accident and needs to be replaced with GiST index. If your code relies on old left-to-right box compare ordering, update it to use << >> operators.
_ST_DumpPoints removed, was no longer needed after PostGIS 2.1.0 when ST_DumpPoints got reimplemented in C
下载地址：
http://download.osgeo.org/postgis/source/postgis-2.4.0.tar.gz