Hi! I have a set of shapefiles, each one with one single polygon, and I want to end up with one single SpPolDF including all polygons. I read the set of shapefiles with readOGR() and thus get one SpPolDF for each polygon. I (unsuccessfully) try: > delme <- rbind.SpatialPolygonsDataFrame(BesosBoundary,TerBoundary) Error in validObject(.Object) : invalid class "SpatialPolygons" object: non-unique Polygons ID slot values Calls: rbind.SpatialPolygons ... SpatialPolygons -> new -> initialize -> initialize -> validObject
> delme <- rbind.SpatialPolygonsDataFrame(BesosBoundary[1],TerBoundary[1]) Error in validObject(.Object) : invalid class "SpatialPolygons" object: non-unique Polygons ID slot values Calls: rbind.SpatialPolygonsDataFrame ... SpatialPolygons -> new -> initialize -> initialize -> validObject > delme <- > rbind.SpatialPolygonsDataFrame(besosbound...@polygons,terbound...@polygons) Error in as(x, "SpatialPolygons") : no method or default for coercing "list" to "SpatialPolygons" Calls: rbind.SpatialPolygonsDataFrame -> do.call -> lapply -> FUN -> as and some other variants. Any help on how to do this? A solution would be using joinPolys from maptools (the polygons do not overlap), but think that rbind.SpatialPolygonsDataFrame() is better suited for this operation. Agus _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
