update: Change values in a file

In rspatial/terra: Spatial Data Analysis

Change values in a file

Description

Change the contents of a file that is the data source of a SpatRaster. BE CAREFUL as you are overwriting values in an existing file.

Usage

## S4 method for signature 'SpatRaster'
update(object, names=FALSE, crs=FALSE, extent=FALSE)

Arguments

object	SpatRaster
names	logical. Should the names be updated?
crs	logical. Should the coordinate reference system be updated?
extent	logical. Should the extent be updated?

Value

SpatRaster (invisibly)

Examples

s <- rast(system.file("ex/logo.tif", package="terra"))   
fname <- paste0(tempfile(), ".tif")
x <- writeRaster(s, fname)
names(x) <- c("A", "B", "C")
ext(x) <- ext(x) + 1
crs(x) <- "+proj=utm +zone=1"

update(x, names=TRUE, crs=TRUE, extent=TRUE)

rast(fname)

rspatial/terra documentation built on Nov. 5, 2024, 5:13 p.m.