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The PostGIS Team is pleased to release the release of PostGIS 3.1.0! This version exposes the new features of GEOS 3.9 as well as numerous core performance enhancements for spatial joins, large object access, text format output and more. Performance is a key feature of this release, with improvements to spatial joins, text outputs, large object reads, vector tile output, and a host of smaller tweaks. The k-means clustering code has been enhanced to support weighting and higher dimensional clusters. Geometry generators to create hexagonal and square tilings have been added, for simpler in-the-database summarization queries. Finally, PostGIS exposes the latest enhancements in the GEOS geometry library 3.9 version. The new overlay engine (aka "OverlayNG") provides more robust handling of difficult input geometries, using a set of new noding strategies to process geometry. For the end user, this should mean no more "topology exceptions" when using the union, difference, intersection or symmetric difference functions. PostGIS also exposes the new fixed precision overlay capability via an additional grid-size parameter on ST_Intersection and the other overlay functions. NOTA: GEOS 3.9 is not in ports yet. URL: https://postgis.net/2020/12/18/postgis-3.1.0/
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16 lines
778 B
Plaintext
PostGIS adds support for geographic objects to the PostgreSQL
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object-relational database. In effect, PostGIS "spatially enables"
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the PostgreSQL server, allowing it to be used as a backend spatial
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database for geographic information systems (GIS), much like ESRI's
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SDE or Oracle's Spatial extension. PostGIS follows the OpenGIS
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"Simple Features Specification for SQL" and has been certified as
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compliant with the "Types and Functions" profile.
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PostGIS development was started by Refractions Research as a project
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in open source spatial database technology. PostGIS is released
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under the GNU General Public License. PostGIS continues to be
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developed by a group of contributors led by a Project Steering
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Committee and new features continue to be added.
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WWW: https://postgis.net/
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