It's curious, but the implication is that the postgis on your machine was built against an earlier GEOS. The version number that postgis reports for GEOS is generated at run-time, while the test of whether to include support for various functions is determined at compile-time. Hence you can see a "GEOS 3.9" version in your postgis, but still not have access to functions that are 3.9+ only.
P > On Apr 16, 2021, at 2:53 PM, Marco Boeringa <ma...@boeringa.demon.nl> wrote: > > Hi all, > > I upgraded my Ubuntu 20.04 instance with "libgeos-3.9.0" from the ubuntugis > repository. > > When I use: > > "SELECT PostGIS_Full_Version();" > > I get back: > > POSTGIS="3.1.1 aaf4c79" [EXTENSION] PGSQL="130" GEOS="3.9.0-CAPI-1.16.2" > PROJ="6.3.1" LIBXML="2.9.10" LIBJSON="0.13.1" LIBPROTOBUF="1.3.3" > WAGYU="0.5.0 (Internal)" > > which at least suggests I am now correctly using GEOS 3.9.0 (note: I updated > the PostGIS extension's functions using "ALTER EXTENSION postgis UPDATE") > > However, after adjusting some existing code to include the new > "ST_ReducePrecision" PostGIS function > (https://postgis.net/docs/ST_ReducePrecision.html), which is new in 3.9.0, I > get back an error: > > "Precision reduction requires GEOS-3.9 or higher" > > which seems weird given the "PostGIS_Full_Version" result. Anyone have a clue > as to what I missed? > > Marco > > _______________________________________________ > postgis-users mailing list > postgis-users@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list postgis-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/postgis-users
