projection.Rd
Get or set the coordinate reference system (CRS) of a Raster* object.
# S4 method for ANY
crs(x, asText=FALSE, ...)
# S4 method for Raster
wkt(obj)
crs(x, ...) <- value
projection(x, asText=TRUE)
projection(x) <- value
Raster* or Spatial object
Raster*, Spatial, or CRS object
logical. If TRUE
, the projection is returned as text. Otherwise a CRS-class
object is returned
additional arguments. None implemented
CRS
object or a character string describing a projection and datum in the PROJ.4 format
Raster*, Spatial*, or character object
crs
replaces earlier function projection
.
For compatibility with sp
you can use proj4string
instead of crs
.
wkt
returns the "well-known-text" representation of the crs.
projections are done by with the PROJ library
r <- raster()
crs(r)
#> Coordinate Reference System:
#> Deprecated Proj.4 representation: +proj=longlat +datum=WGS84
crs(r) <- "+proj=lcc +lat_1=48 +lat_2=33 +lon_0=-100 +datum=WGS84"
crs(r)
#> Coordinate Reference System:
#> Deprecated Proj.4 representation:
#> +proj=lcc +lat_1=48 +lat_2=33 +lon_0=-100 +datum=WGS84
w <- wkt(r)
w
#> [1] ""
cat(w, "\n")
#>