## S3 method for class 'Spatial,data.frame':
merge(x, y, by=intersect(names(x), names(y)), by.x=by, by.y=by, all.x=TRUE, suffixes = c(".x",".y"), incomparables=NULL, ...)
merge
match
.merge,SpatialPolygons,SpatialPolygons-method
for appending and perhaps spatially intersecting polygons
The merge,Raster,Raster-method
for merging Raster objects