Hi Markus,
I have had success with a somewhat smaller point-in-polygon problem
using a relational database (PostgreSQL) with suitable indexes to
determine containment. The database serves as a large lookup table for
this purpose, using RODBC. I use R to build a series of SQL INSERT
statements to
On Fri, 14 Dec 2007, Ingo Holz wrote:
> Hi,
>
> I have a SpatialPolygonsDataFrame (SPolyDF) and a
> SpatialPointsDataFrame(SPoiDF). The SPolyDF is a (very) large set of
> polygons (some 30.000) and the SPoiDF is actually a grid of some 60.000
> points.
>
> I would like to use overlay(SPolyDF, SPoi
