[R-sig-Geo] plot points in grid-plot with sp.layout

[Tom Gottfried]

Hi list,

the last plot in the following code ends up with error messages in the plot:

data(meuse.grid)
data(meuse)
coordinates(meuse.grid) <- ~x+y
coordinates(meuse) <- ~x+y
meuse.grid <- as(as(meuse.grid, "SpatialPixelsDataFrame"),
    "SpatialGridDataFrame")

spplot(meuse) # works
spplot(meuse, sp.layout=list(sp.points,
    meuse, col="red")) # works

spplot(meuse.grid) # works
spplot(meuse.grid, sp.layout=list(sp.points, meuse)) # does not work


What can I do to make the points being plotted on top of the grid?

Thanks in advance!!

Tom