1. 2012-05-29 Re: [R-sig-Geo] Overlaying a grid onto a set of point r-sig-geo Edzer Pebesma 2. 2012-05-29 Re: [R-sig-Geo] Overlaying a grid onto a set of point r-sig-geo Robert J. Hijmans 3. 2012-05-29 Re: [R-sig-Geo] Overlaying a grid onto a set of point r-sig-geo Lyndon Estes 4. 2012-05-28 [R-sig-Geo] Overlaying a grid onto a set of points r-sig-geo Gavin Simpson