gdal_utils: Native interface to gdal utils

In edzer/sfr: Simple Features for R

Native interface to gdal utils

Description

Native interface to gdal utils

Usage

gdal_utils(
  util = "info",
  source,
  destination,
  options = character(0),
  quiet = !(util %in% c("info", "gdalinfo", "ogrinfo", "vectorinfo", "mdiminfo")) ||
    ("-multi" %in% options),
  processing = character(0),
  colorfilename = character(0),
  config_options = character(0)
)

Arguments

util	character; one of info, warp, rasterize, translate, vectortranslate (for ogr2ogr), buildvrt, demprocessing, nearblack, grid, mdiminfo and mdimtranslate (the last two requiring GDAL 3.1), ogrinfo (requiring GDAL 3.7), footprint (requiring GDAL 3.8)
source	character; name of input layer(s); for warp, buidvrt or mdimtranslate this can be more than one
destination	character; name of output layer
options	character; options for the utility
quiet	logical; if TRUE, suppress printing the output for info and mdiminfo, and suppress printing progress
processing	character; processing options for demprocessing
colorfilename	character; name of color file for demprocessing (mandatory if processing="color-relief")
config_options	named character vector with GDAL config options, like c(option1=value1, option2=value2)

Value

info returns a character vector with the raster metadata; all other utils return (invisibly) a logical indicating success (i.e., TRUE); in case of failure, an error is raised.

See Also

gdal_addo for adding overlays to a raste file; st_layers to query geometry type(s) and crs from layers in a (vector) data source

Examples

if (sf_extSoftVersion()["GDAL"] > "2.1.0") {
# info utils can be used to list information about about a raster
# dataset. More info: https://gdal.org/programs/ngdalinfo.html
in_file <- system.file("tif/geomatrix.tif", package = "sf")
gdal_utils("info", in_file, options = c("-mm", "-proj4"))

# vectortranslate utils can be used to convert simple features data between
# file formats. More info: https://gdal.org/programs/ogr2ogr.html
in_file <- system.file("shape/storms_xyz.shp", package="sf")
out_file <- paste0(tempfile(), ".gpkg")
gdal_utils(
  util = "vectortranslate",
  source = in_file,
  destination = out_file, # output format must be specified for GDAL < 2.3
  options = c("-f", "GPKG")
)
# The parameters can be specified as c("name") or c("name", "value"). The
# vectortranslate utils can perform also various operations during the
# conversion process. For example we can reproject the features during the
# translation.
gdal_utils(
  util = "vectortranslate",
  source = in_file,
  destination = out_file,
  options = c(
  "-f", "GPKG", # output file format for GDAL < 2.3
  "-s_srs", "EPSG:4326", # input file SRS
  "-t_srs", "EPSG:2264", # output file SRS
  "-overwrite"
  )
)
st_read(out_file)
# The parameter s_srs had to be specified because, in this case, the in_file
# has no associated SRS.
st_read(in_file)
}

edzer/sfr documentation built on April 23, 2024, 7:17 p.m.