[R-sig-Geo] spplot(), SpatialGridDataFrame

[Ingo Holz]

Hi,

 I have a SpatialGridDataFrame and want to plot it with spplot().

 Is it possible to plot only the grids that have a special value (eg. 312)?

 If it is not possible to do this with spplot() how would it be done with plot()?

Thanks, Ingo