Hello Angeles, For your second question: Maybe you can compile an older version of Qgis by using Github
https://github.com/qgis/QGIS How to uninstall Qgis is depending on the way you use to install it before, I guess. But it would be possible to use different versions of Qgis as well (Keep your actual version and compile Qgis in a separate folder). Kind regards Piet Am 04/21/ schrieb Angeles Raphaël Saul via Qgis-user: > 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 > > : [1]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' > > > > Thus I tried to install QGIS 3.24 via this > > link > [2]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 > > > References > > Visible links > 1. https://gisunchained.wordpress.com/2019/05/29/using-qgis-from-conda/ > 2. https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu > _______________________________________________ > 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 -- Kind regards Piet GPG Fingerprint: 1D9D DAD5 BD91 A5E8 C5DB B400 D286 3A10 4969 7909 _______________________________________________ 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
