geometry-methods {sp} | R Documentation

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

### Description

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.

### Usage

    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

[Package sp version 1.2-2 Index]