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I have two different polygon layers, 1 and 2. Now i want to split polygons in layer 1 taking reference from polygons in layer 2. Is it possible in qgis???? Please find attached image as reference layer 1 in red colur and layer 2 is in black.
In the processing toolbox search for Polygons to lines and convert Layer 2 into lines, then search again for Split with lines, use the lines that you have created to split Layer 1.
Polygons to lines
Split with lines
Required, but never shown