Re: [R-sig-Geo] 'Cleaning' unioned polygons using sp and maptools...

2009-03-03 Thread Barry Rowlingson
2009/3/3 Peter S. Hayes : > Hi List, > > Here's a question... I have a watershed polygon that has been 'tiled' into > separate and non-overlapping cells according to a combination of attributes. > The original watershed boundary seems not to be available in undivided form > and I was interested in

[R-sig-Geo] 'Cleaning' unioned polygons using sp and maptools...

2009-03-03 Thread Peter S. Hayes
Hi List, Here's a question... I have a watershed polygon that has been 'tiled' into separate and non-overlapping cells according to a combination of attributes. The original watershed boundary seems not to be available in undivided form and I was interested in retrieving it from the divided s