metags: Set or get metadata

In rspatial/terra: Spatial Data Analysis

Set or get metadata

Description

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

Usage

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

## S4 method for signature '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)

metags(r) <- c("another_tag=another_value", "one more=this value")
metags(r)

metags(r) <- c(another_tag="44", `one more`="that value")
metags(r)


metags(r, name="two")

# remove a tag
metags(r) <- cbind("one", "")
metags(r) <- "two="
metags(r)

# remove all metags
metags(r) <- NULL
metags(r)

rspatial/terra documentation built on April 28, 2024, 12:22 a.m.