Set or get metadata

You can set arbitrary metadata to a SpatRaster using "name=value" tags.

Usage

# S4 method for class 'SpatRaster'
metags(x, layer = NULL) <- value

# S4 method for class 'SpatRaster'
metags(x, layer=NULL, name=NULL)

Arguments

x

SpatRaster

layer

NULL or positive integer. If the value is NULL, the tags assigned or returned are for the SpatRaster. Otherwise for the layer number(s)

name

character

value

character of "name=value" or two-column matrix

Value

SpatRaster (metags<-), or named character (metags)

Examples

r <- rast(ncol=5, nrow=5)
m <- cbind(c("one", "two", "three"), c("ABC", "123", "hello"))
metags(r) <- m
metags(r)
#>     one   three     two 
#>   "ABC" "hello"   "123" 

metags(r) <- c("another_tag=another_value", "one more=this value")
metags(r)
#>     another_tag             one        one more           three             two 
#> "another_value"           "ABC"    "this value"         "hello"           "123" 

metags(r) <- c(another_tag="44", `one more`="that value")
metags(r)
#>  another_tag          one     one more        three          two 
#>         "44"        "ABC" "that value"      "hello"        "123" 


metags(r, name="two")
#>   two 
#> "123" 

# remove a tag
metags(r) <- cbind("one", "")
metags(r) <- "two="
metags(r)
#>  another_tag     one more        three 
#>         "44" "that value"      "hello" 

# remove all metags
metags(r) <- NULL
metags(r)
#> named character(0)