Names of Spat* objects

Get or set the names of the layers of a SpatRaster or the attributes of a SpatVector. With longnames you can get or set the "long names" of a SpatRaster or SpatRasterDataset.

For a SpatRaster, you can also get/set a variable name or long name (one per data source).

See set.names for in-place setting of names.

# S4 method for SpatRaster
names(x)

# S4 method for SpatRaster
names(x)<-value

# S4 method for SpatRaster
varnames(x)

# S4 method for SpatRaster
varnames(x)<-value

# S4 method for SpatRaster
longnames(x)

# S4 method for SpatRaster
longnames(x)<-value


# S4 method for SpatRasterDataset
names(x)

# S4 method for SpatRasterDataset
names(x)<-value

# S4 method for SpatRasterDataset
varnames(x)

# S4 method for SpatRasterDataset
varnames(x)<-value

# S4 method for SpatRasterDataset
longnames(x)

# S4 method for SpatRasterDataset
longnames(x)<-value

# S4 method for SpatVector
names(x)

# S4 method for SpatVector
names(x)<-value

Arguments

x

SpatRaster, SpatRasterDataset, or SpatVector

value

character (vector)

Value

character

Note

terra enforces neither unique nor valid names. See make.unique to create unique names and {make.names} to make syntactically valid names.

Examples

s <- rast(ncols=5, nrows=5, nlyrs=3)
nlyr(s)
#> [1] 3
names(s)
#> [1] "lyr.1" "lyr.2" "lyr.3"
names(s) <- c("a", "b", "c")
names(s)
#> [1] "a" "b" "c"

# space is not valid
names(s)[2] <- "hello world"
names(s)
#> [1] "a"           "hello world" "c"          

# two invalid names
names(s) <- c("a", "  a  ", "3")
names(s)
#> [1] "a"     "  a  " "3"    

# SpatVector names
f <- system.file("ex/lux.shp", package="terra")
v <- vect(f)
names(v)
#> [1] "ID_1"   "NAME_1" "ID_2"   "NAME_2" "AREA"   "POP"   
names(v) <- paste0(substr(names(v), 1, 2), "_", 1:ncol(v))
names(v)
#> [1] "ID_1" "NA_2" "ID_3" "NA_4" "AR_5" "PO_6"