On Fri, 22 Apr 2022 at 06:03, Angeles Raphaël Saul via Qgis-user <[email protected]> wrote: > > Dear QGIS community, > > I have two questions : Do you know how to install easily pcraster on ubuntu ? > How can I uninstall the latest version of QGIS 3.24 and get an older version > of QGIS on ubuntu ? > > > Situation : I am a recent ubuntu user and I need to install pcraster for > advanced watershed calculations. Apparently it is possible to install it > using anaconda-navigator, so I first needed to install anaconda using this > tutorial : > https://gisunchained.wordpress.com/2019/05/29/using-qgis-from-conda/. But > once QGIS 3.18.3 installed and opened, any plugin utilization do not work at > all. For example, applying strahler order tool from SAGA on a DEM does not > work. Every time, the python error is : > > > WARNING Traceback (most recent call last): > > File > "/home/raphael/anaconda3/envs/demonstration/share/qgis/python/plugins/processing/gui/AlgorithmDialog.py", > line 194, in runAlgorithm > > self.cancelButton().setEnabled(self.algorithm().flags() & > QgsProcessingAlgorithm.FlagCanCancel) > > TypeError: setEnabled(self, bool): argument 1 has unexpected type 'Flags'
This is (unfortunately) expected -- Python 3.9 broke some API compatibility, so the older QGIS 3.18 release ISN'T compatible with the newer Python version. As you've concluded, the solution is updating to a newer, supported QGIS version. Nyall > > > Thus I tried to install QGIS 3.24 via this link > https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu to see > if the problem can be resolved with a more recent version. The problem is > that this tutorial is not for a conda environment, so now I want to uninstall > 3.24 to go to an older and more stable version and I don't know how to do it. > If I install and uninstall QGIS, the version 3.24 still appears. Moreover, I > still don't have pcraster installed and operational which I need the most. > > Thank you in advance for your precious answer and have a good night! > > Raphaël > > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ Qgis-user mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
