DESCRIPTION

r.out.gdal outputs GRASS raster maps into various GIS formats as supported by GDAL. This script is based on 'gdal_translate', it's parameters are similar to those of 'gdal_translate'. It requires the installation of either GDAL with GRASS support or of the GDAL-OGR-GRASS plugin which is available from the GDAL web site.

For possible metaopt parameters see the 'supported formats' pages of GDAL. The createopt may be used to create TFW or World files ("TFW=YES", "WORLDFILE=ON").

SUPPORTED FORMATS

The set of supported formats written by r.out.gdal depend on the local GDAL installation. Available may be (incomplete list):

  AAIGrid: Arc/Info ASCII Grid
  BMP: MS Windows Device Independent Bitmap
  BSB: Maptech BSB Nautical Charts
  DTED: DTED Elevation Raster
  ELAS: ELAS
  ENVI: ENVI .hdr Labelled
  FIT: FIT Image
  GIF: Graphics Interchange Format (.gif)
  GTiff: GeoTIFF
  HDF4Image: HDF4 Dataset
  HFA: Erdas Imagine Images (.img)
  JPEG2000: JPEG-2000 part 1 (ISO/IEC 15444-1)
  JPEG: JPEG JFIF
  MEM: In Memory Raster
  MFF2: Atlantis MFF2 (HKV) Raster
  MFF: Atlantis MFF Raster
  NITF: National Imagery Transmission Format
  PAux: PCI .aux Labelled
  PCIDSK: PCIDSK Database File
  PNG: Portable Network Graphics
  PNM: Portable Pixmap Format (netpbm)
  VRT: Virtual Raster
  XPM: X11 PixMap Format

NOTES

When writing out GeoTIFF format for users of ESRI software or ImageMagick, the band interleaving should be switched to pixel interleaving using createopt="INTERLEAVE=PIXEL". Multiple options have to be specified as comma separated list (createopt=TFW=YES,COMPRESS=DEFLATE).

EXAMPLE

Export of the map 'elevation.dem' from the Spearfish data set:

r.out.gdal elevation.dem format=GTiff type=Int16 output=elev_dem.tif

REFERENCES

GDAL library

Compile and install GRASS and QGIS with GDAL/OGR Plugin

AUTHOR

Markus Neteler, ITC-irst, Italy