[R-sig-Geo] specifying different colors for vector map as background

Hi, I'm trying to create a spplot with a vector map on the background. It works fine if I don't want the polygon map to be filled, but what I do want to is to have the polygons filled with different colors. The following command plots the polygon map fine, filling each polygon with its respect

[R-sig-Geo] reading WKB geometry

Hi list, I've been looking around trying to solve this problem; unfortunately I haven't found a way to solve it. I have a database with sampling points with an associated sampling date and would like to plot the density of sampling points on a monthly basis for one year using spplot. However,