It is also possible to fill holes in polygon features usingsolve the following expression insame task using the "Geometry by expression": with a corresponding expression.
To fill all holes in polygon features :
make_polygon( array_first( geometries_to_array( order_parts( boundary($geometry), 'area(make_polygon(boundary($geometry)))', False ) ) ) ) Input:
Output:
To fill only holes with a certain area in polygon features :
if( num_interior_rings($geometry) = 0, $geometry, coalesce( sym_difference( collect_geometries( array_foreach( array_filter( array_foreach( generate_series(1, num_interior_rings($geometry), 1), interior_ring_n($geometry, @element) ), area(make_polygon(@element)) > 300 -- specify the maximum area ), make_polygon(@element) ) ), $geometry), $geometry ) ) Input:
Features with holes in which an area is more than 300 will be filled.
Output:
