geometry-methods function

Methods for retrieving the geometry from a composite (geometry + attributes) object

geometry retrieves the SpatialXxx object from a SpatialXxxDataFrame object, with Xxx Lines, Points, Polygons, Grid, or Pixels. geometry<- converts a data.frame into a Spatial object. methods

geometry(obj) 
geometry(obj) <- value

Arguments

• obj: in case of assignment, a data.frame, else an object of class Spatial
• value: object of class Spatial

Methods

• obj = "Spatial":
• obj = "SpatialPointsDataFrame":
• obj = "SpatialMultiPointsDataFrame":
• obj = "SpatialPolygonsDataFrame":
• obj = "SpatialPixelsDataFrame":
• obj = "SpatialGridDataFrame":
• obj = "SpatialLinesDataFrame":

Author(s)

Edzer Pebesma, edzer.pebesma@uni-muenster.de

Examples

data(meuse)
m = meuse
coordinates(m) = meuse[, c("x", "y")]
pts = geometry(m)
class(pts)
geometry(meuse) = pts
class(meuse)
identical(m, meuse) # TRUE