Target size and extent for GDAL command line

Source: R/gdal-utils-helpers.R

Format grid properties for GDAL command line options (-ts for target size, -te for target extent).

ts_te(dimension, extent)

gdal_te(extent)

gdal_ts(dimension)

Arguments

dimension

integer vector of ncol, nrow (target size)

extent

numeric vector of xmin, xmax, ymin, ymax (target extent)

Value

A character string formatted for GDAL command line:

  • ts_te(): combined -ts and -te arguments

  • gdal_ts(): -ts ncol nrow string

  • gdal_te(): -te xmin ymin xmax ymax string (note: reordered for GDAL)

Details

These functions generate the string arguments used by GDAL utilities like gdalwarp and gdal_translate. The gdal_ts() function is named after the GDAL -ts flag and gdal_te() after the GDAL -te flag.

See also

vcrop() for computing aligned extents

Examples

ts_te(c(10, 100), 1:4)
#> [1] "-ts 10 100 -te 1 3 2 4"

gdal_ts(c(10, 100))
#> [1] "-ts 10 100"

gdal_te(1:4)
#> [1] "-te 1 3 2 4"

## use in a GDAL command (not run)
if (FALSE) { # \dontrun{
cmd <- sprintf("gdalwarp %s %s input.tif output.tif",
               gdal_ts(c(1000, 500)), gdal_te(c(-180, 180, -90, 90)))
} # }