I am trying to smooth lines with geometry generator but without succes (at regional scale, only change at large scale ) Any help ? You will find the files in link.
https://drive.google.com/file/d/1jxf4TmodAZuDNb4cY77W0qfhaa5_MMno/view?usp=sharing
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3'Without success' is a little vague, what actually goes wrong? Do you get error messages, is your output turning into scribbles, do the geometries not change, does you computer catch fire or order takeaway without your consent.... – Michael Stimson Nov 13 '23 at 07:14
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It seems to be working properly. The problem could be that at the zoom scale at which you view the result you can't see the smoothing effect – Ingrid Ingravida Nov 13 '23 at 07:20
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2See: Avoiding too curly contours in QGIS – BERA Nov 13 '23 at 07:26
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Try experimenting with the offset parameter of the smooth function.
From the docs
offset
value between 0 and 0.5 which controls how tightly the smoothed geometry follow the original geometry. Smaller values result in a tighter smoothing, larger values result in looser smoothing.
Result of smooth($geometry, iterations:=7, offset:=0.3)
Matt
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