"GridTopology" for a list of vector objects (usually multiple realizations of the same process).## S3 method for class 'GridTopology':
count(x, vectL, \dots)"GridTopology""SpatialPoint*", "SpatialLines*" or "SpatialPolygons*" (equiprobable realizations of the same process)SpatialVectorsSimulations-class, vect2rast