Thanks Roger,
Works a treat.
Wesley
>>> Roger Bivand 05/14/09 9:51 AM >>>
On Thu, 14 May 2009, Wesley Roberts wrote:
> Dear list,
>
> I would like to calculate the area of a polygon. I have found areapl() in
> splancs but am having trouble using it.
>
> x<-1
> poly <- readShapePoly("a1_l4_
On Thu, 14 May 2009, Wesley Roberts wrote:
Dear list,
I would like to calculate the area of a polygon. I have found areapl() in
splancs but am having trouble using it.
x<-1
poly <- readShapePoly("a1_l4_aerial_ws.shp", IDvar="cat",
proj4string=CRS("+proj=tmerc +south +ellips=WGS84 +datum=WGS8
Dear list,
I would like to calculate the area of a polygon. I have found areapl() in
splancs but am having trouble using it.
x<-1
poly <- readShapePoly("a1_l4_aerial_ws.shp", IDvar="cat",
proj4string=CRS("+proj=tmerc +south +ellips=WGS84 +datum=WGS84 +lon_o=31 +k_0=1
+units=m +no_defs"))
poly_
