Deleting polygon created with Add Polygon Feature in QGIS
108862
Removing selection area from canvas when no layer is available or selected
124101
Removing overlapping/duplicate polygons in the same layer using QGIS
98661
Split lines by polygons in QGIS
20600
Saving selected features in QGIS?
50056
Dissolving ploygons in QGIS or Grass to new polygons of defined population sizes?
122067
Split a polygon layer with another polygon layer in QGIS
16265
Removing overlapping part of polygons using QGIS?
135484
Filling holes in polygons automatically using QGIS
85331
Creating polygon using coordinates
9860
Split polygon with selected line from another layer in QGIS
83559
Understanding difference between Polygon and Multipolygon for shapefiles in QGIS?
54995
How to suppress polygon boundaries shared by objects of same type in QGIS?
136963
PostgreSQL trouble editing points / lines / polygons in QGIS
80576
Adding/updating field to polygon feature class that lists bordering (neighbor) polygons?
135556
Seeking purge function to remove layers from qgs file which are not present in Layers pane of QGIS?
142595
Prioritising polygons in QGIS
130561
Reordering polygon shapefile permanently?