is.projected {sp} | R Documentation

## Sets or retrieves projection attributes on classes extending SpatialData

### Description

Sets or retrieves projection attributes on classes extending SpatialData

### Usage

    is.projected(sd)
    proj4string(sd)
    proj4string(sd) <- value

### Arguments

`sd` | An object of class or extending Spatial-class
`value` | character string, indicating a valid proj4 string

### Details

proj4 strings are not operative yet

### Value

`is.projected` returns a logical; `proj4string` returns a character vector of length 1; `spatial.dimension` returns the number of spatial dimensions (2 or 3).

### Author(s)

Edzer J. Pebesma, e.pebesma@geo.uu.nl

### See Also

CRS

### Examples

[Package sp version 0.7-12 Index]