Dear all, Following my previous question, after some testing, although I've enabled the option in QGIS *"Enable overwrite:* Processing -> Options -> General -> *Overwrite existing files"* )
, it seems that all the contents of the 'intermediate' folder aren't really being deleted. This is causing problems when re-running the modeler (new settings aren't always being applied to the new version). I can't find a tool within the modele that would delete files/folders. So, unless I'm mistaken, it seems the only solution would be to add a small script at the beginning of the modeler's process that would force the deletion of all the folder's contents for the 'intermediate folder: all existing files and all folders as well. Does anyone think they could point me towards such a script? Many thanks. Le mar. 13 janv. 2026 à 15:13, celati Laurent <[email protected]> a écrit : > Hello, > Thanks so much for your reply. I have just done several tests following > your recommandation. Indeed, *"Enable overwrite:* Processing -> Options > -> General -> *Overwrite existing files" *seems to work and to be enough > for my use case. > > Le lun. 12 janv. 2026 à 20:32, [email protected] [email protected] < > [email protected]> a écrit : > >> Hi celati, >> >> QGIS Modeler doesn’t really have a built-in “clean intermediate outputs >> on rerun” option. The usual workarounds are: >> >> *Enable overwrite:* Processing -> Options -> General -> *Overwrite >> existing files*. For many GDAL outputs (like GeoTIFF) this is enough. >> >> *Delete first, then run:* Add a first step in the model that deletes the >> known intermediate files (if you have a delete/remove tool available in >> your Processing toolbox - often under GDAL). Since your filenames are >> fixed, it’s straightforward. >> >> If you don’t have any delete tool available in Modeler, the reliable >> fallback is running the model from a small script that deletes the >> *intermediate* folder contents before launching the model. >> >> I hope this helps. >> >> >> On 01/12/2026 7:05 PM CET celati Laurent via QGIS-User < >> [email protected]> wrote: >> >> >> >> >> Dear all, >> >> >> >> I'm working with QGIS 3.40. >> >> I've set up a small QGIS modeler with several inputs, algorithms, >> intermediate outputs, and a final result (model output). For the >> intermediate algorithm outputs, I've defined a "pre-calculated value" with >> a relative path. >> >> Here 's the expression setted : >> >> @project_home || '/intermediaire' || '/segmentation_raster' || '.tif' >> >> >> >> All my intermediate outputs are stored in a folder named "intermediate". >> Each output file has a predefined name and extension. >> >> This works. However, I would like these 'intermediate' files to be >> automatically deleted/overwritten each time the modeler is run again >> (delete/replace the output files from the previous run). >> Could you give me some guidances, provide some ways to do that ? Thanks >> so much. >> _______________________________________________ >> 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 >> >> >> [image: FiberQ] >> Vladimir Vuković >> Author of FiberQ >> >> [email protected] >> fiberq.net >> +381 60 426 2012 <+381604262012> >> >
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