Description Usage Arguments Details Value Author(s) See Also Examples
An all-R routine that computes area of all
polygons in a SpatialPolygons*
object,
taking account of holes.
1 | polygonArea(x)
|
x |
A spatial object inheriting from |
Provides the same answer as rgeos::gArea
, but is
all-R (does not require rgeos Java library) and does not
fire a warning if x
is un-projected (i.e., lat-long).
Area of all polygons in x
, taking account of holes.
Units of area are squared units of coordinates in x
. E.g.,
square meters if coordinates in x
are UTM meters, square
decimal degrees if coordinates in x
are lat-long decimal
degrees.
Trent McDonald
1 2 | # Area of Washington state, in hectares
a <- polygonArea( WA ) / (100*100)
|
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.