Hi Andre, Okay thanks once again... I'll have a go, though I'm not sure how to remove them. Would it be 'sudo apt-get remove gdal-bin' or does it need 'sudo apt-get remove gdal-bin 3.0.2+dfsg-1~bionic2'? I ask because I don't know if gdal-bin is something generic used elsewhere and I have to denominate that. As I don't really understand what those files are, I'm wary of removing them without being sure of the syntax first. Can I be sure they aren't needed for another program, for example Blender?
So once those four files are removed I can try sudo apt-get install libgdal20=2.2.3+dfsg-2 again? And once I have libgdal20 installed then I can run sudo apt-get install qgis qgis-plugin-grass python3-qgis? If I'm missing anything else then please let me know.. Cheers, Jimi. On Fri, Feb 28, 2020 at 7:27 PM Andre Joost <andre+jo...@nurfuerspam.de> wrote: > Am 28.02.20 um 18:29 schrieb J. M: > > > Here's what I get: > > sudo apt-get remove libgdal20 > > [sudo] password for jimi: > > Reading package lists... Done > > Building dependency tree > > Reading state information... Done > > Package 'libgdal20' is not installed, so not removed > > That was expected, because apt-cache policy libgdal20 already told you > that it was not installed. > > > jimi@jimi-System-Product-Name:~$ dpkg -l | grep gdal > > ii gdal-bin 3.0.2+dfsg-1~bionic2 > > amd64 Geospatial Data Abstraction Library - > > Utility programs > > ii gdal-data 3.0.2+dfsg-1~bionic2 > > all Geospatial Data Abstraction Library - > Data > > files > > ii libgdal26 3.0.2+dfsg-1~bionic2 > > amd64 Geospatial Data Abstraction Library > > ii python3-gdal 3.0.2+dfsg-1~bionic2 > > amd64 Python 3 bindings to the Geospatial > Data > > > These are still GDAL 3.02 packages that you installed with the ubuntugis > PPA. Get rid of those, otherwise you will not get further. > > > > > I'm still not clear about what the ubuntugis PPA is needed for, or what > > gdal even is.. > > GDAL is more or less the heartbeat of QGIS. Almost every operation uses > it. For some reason, you must use exactly the same GDAL version as the > QGIS package is compiled against. For bionic (without ubuntugis), this > is GDAL 2.2.3. The gdal-abi package is used to confirm that version. > > With the Ubuntugis PPA, you have installed a newer version of GDAL > (3.0.2), and the packet manager does not downgrade it by itself (it does > not know about th specific QGIS requirements). > > > HTH, > Andre Joost > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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