Re: [R-sig-Geo] unionSpatialPolygons - single polygon instead of multipart polygon

2008-09-14 Thread hadley wickham
On Sun, Sep 14, 2008 at 11:48 AM, Roger Bivand <[EMAIL PROTECTED]> wrote: > On Sun, 14 Sep 2008, hadley wickham wrote: > >> Hi All, >> >> I'm trying to figure out exactly what output unionSpatialPolygons >> gives me - it looks like it merges my singleton polygons into >> multi-polygons (see output

Re: [R-sig-Geo] unionSpatialPolygons - single polygon instead of multipart polygon

2008-09-14 Thread Roger Bivand
On Sun, 14 Sep 2008, hadley wickham wrote: Hi All, I'm trying to figure out exactly what output unionSpatialPolygons gives me - it looks like it merges my singleton polygons into multi-polygons (see output of str below), but what I really want is just a single singleton polygon, containing the

[R-sig-Geo] unionSpatialPolygons - single polygon instead of multipart polygon

2008-09-14 Thread hadley wickham
Hi All, I'm trying to figure out exactly what output unionSpatialPolygons gives me - it looks like it merges my singleton polygons into multi-polygons (see output of str below), but what I really want is just a single singleton polygon, containing the boundary of the unioned areas. How can I get