as.SpatialPolygons.PolygonsList function

Making SpatialPolygons objects

This function is used in making SpatialPolygons objects from other formats.

as.SpatialPolygons.PolygonsList(Srl, proj4string=CRS(as.character(NA)))

Arguments

• Srl: A list of Polygons objects

• proj4string: Object of class "CRS"; holding a valid proj4 string

Returns

The functions return a SpatialPolygons object

Author(s)

Roger Bivand

Examples

grd <- GridTopology(c(1,1), c(1,1), c(10,10))
polys <- as.SpatialPolygons.GridTopology(grd)
plot(polys)
text(coordinates(polys), labels=sapply(slot(polys, "polygons"), function(i) slot(i, "ID")), cex=0.6)