vrt {terra}

R Documentation

Virtual Raster Tiles

Description

Create a Virtual Raster Tiles (VRT) dataset from a collection of file-based raster datasets.

Usage

## S4 method for signature 'character'
vrt(x, filename="", options=NULL, overwrite=FALSE)

Arguments

x	character. Filenames of raster "tiles". See tiles
filename	character. Output VRT filename
options	character. Options as for https://gdal.org/programs/gdalbuildvrt.htmlgdalbuildvrt
overwrite	logical. Should filename be overwritten if it exists?

Value

SpatRaster

See Also

makeTiles to create tiles; makeVRT to create a .vrt file for a file without a header

Examples

Run examples

r <- rast(ncols=100, nrows=100)
values(r) <- 1:ncell(r)
x <- rast(ncols=2, nrows=2)
filename <- paste0(tempfile(), "_.tif")
ff <- makeTiles(r, x, filename)
ff

vrtfile <- paste0(tempfile(), ".vrt")
v <- vrt(ff, vrtfile)
head(readLines(vrtfile))
v

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