1. 2015-05-18 Re: [R-sig-Geo] Spatial overlay vs. extract and aggre r-sig-geo Juta Kawalerowicz 2. 2015-04-28 Re: [R-sig-Geo] Spatial overlay vs. extract and aggre r-sig-geo Edzer Pebesma 3. 2015-04-23 [R-sig-Geo] Spatial overlay vs. extract and aggregati r-sig-geo Juta Kawalerowicz