terra (version 1.7-3)

vrt: Virtual Raster Dataset

Description

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

Usage

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

Value

SpatRaster

Arguments

x

character. Filenames of raster "tiles". See tiles

filename

character. Output VRT filename

options

character. All arguments as separate vector elements. Options as for gdalbuildvrt

overwrite

logical. Should filename be overwritten if it exists?

See Also

makeTiles to create tiles; makeVRT to create a .vrt file for a binary raster file that does not have a header file.

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)


## output in lower resolution
#vrtfile <- paste0(tempfile(), ".vrt")
#v <- vrt(ff, vrtfile, options = c("-tr", 5, 5))
#head(readLines(vrtfile))
#v