symdif function

Symetrical difference

Symetrical difference of SpatialPolygons* objects methods

## S4 method for signature 'SpatialPolygons,SpatialPolygons'
symdif(x, y, ...)

Arguments

• x: SpatialPolygons* object
• y: SpatialPolygons* object
• ...: Additional SpatialPolygons* object(s)

Returns

SpatialPolygons*

See Also

erase

Examples

#SpatialPolygons
p <- shapefile(system.file("external/lux.shp", package="raster"))
b <- as(extent(6, 6.4, 49.75, 50), 'SpatialPolygons')
crs(b) <- crs(p)
sd <- symdif(p, b)
plot(sd, col='red')