projection: Get or set a coordinate reference system (projection)

In miraisolutions/raster: Geographic Data Analysis and Modeling

Description

Get or set the coordinate reference system (CRS) of a Raster* object.

Usage

## S4 method for signature 'ANY'
crs(x, asText=FALSE, ...)

crs(x) <- value

projection(x, asText=TRUE)
projection(x) <- value

Arguments

x	Raster* or Spatial object
asText	logical. If TRUE, the projection is returned as text. Otherwise a CRS object is returned
...	additional arguments (not implemented)
value	CRS object or a character string describing a projection and datum in the PROJ.4 format

Details

projections are done by with the PROJ.4 library exposed by rgdal

Value

Raster*, Spatial*, CRS, or character object

Note

crs replaces earlier function projection. For compatibility with sp you can use proj4string instead of crs.

See Also

projectRaster, CRS-class, spTransform-methods, projInfo

Examples

 
r <- raster()
crs(r)
crs(r) <- "+proj=lcc +lat_1=48 +lat_2=33 +lon_0=-100 +ellps=WGS84"
crs(r)

miraisolutions/raster documentation built on May 30, 2019, 11:41 p.m.