I'm looking for strategies to replicate the functionality available via ArcGIS' "Aggregate Polygons" tool. This is different from a straight dissolve on the polygons - the operation has to fill in gaps within a certain tolerance.
I'd be happy with a solution in either QGIS or PostGIS. I tried to work something out already with a convex hull but it doesn't quite get what I'm after so I'm at a loss. Any strategies you've come across?