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

Description Usage Arguments Details Value Note See Also Examples

View source: R/projection.R

Description

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

Usage

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## S4 method for signature 'ANY'
crs(x, asText=FALSE, ...)
## S4 method for signature 'Raster'
wkt(obj)
crs(x, ...) <- value

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

Arguments

x

Raster* or Spatial object

obj

Raster*, Spatial, or CRS object

asText

logical. If TRUE, the projection is returned as text. Otherwise a CRS-class object is returned

...

additional arguments. None 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*, or character object

Note

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.

See Also

projectRaster, CRS-class, spTransform, projInfo

Examples

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r <- raster()
crs(r)
crs(r) <- "+proj=lcc +lat_1=48 +lat_2=33 +lon_0=-100 +datum=WGS84"
crs(r)
w <- wkt(r)
w
cat(w, "\n")

raster documentation built on Nov. 15, 2020, 1:06 a.m.