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   i.in.spotvgt imports SPOT Vegetation (1km, global) NDVI data sets.
   After import the digital numbers (DN) are remapped to VEGETATION NDVI
   values and the NDVI color table is applied. The imported DN map is
   removed after remapping.

   Apparently missing raster cells due to bad pixel quality are
   reconstructed by the SPOT operating team in the NDVI file. The
   differences between the filtered (-a flag) and raw NDVI map should be
   compared.

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   The SPOT VGT files are delivered in HDF4 (Hierarchical Data Format
   Release 4) format. It is required to have the GDAL libraries installed
   with HDF4 support.

  Export of entire world SPOT VGT maps

   When working with SPOT VGT with entire world extent, it is recommended
   to zoom to w=180W and e=180E instead of using the map extent for map
   export. These entire world SPOT VGT data are exceeding -180.0 degree
   which can lead to unhelpful large East-West coordinates in the exported
   file. It is also recommended to then use an export command which
   respects the user settings. Example:

# import:
i.in.spotvgt 0001_NDV.HDF

# export:
g.region w=180W e=180E n=75:00:16.071429N s=56:00:16.069919S res=0:00:32.142857
 -p
r.out.tiff -t 0001_NDV out=spotndvi

СÐ. ТÐÐÐÐ

   [1]r.in.gdal

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   [2]SPOT Vegetation (1km, global) NDVI data set server
   [3]SPOT Vegetation FAQ
   [4]SPOT Vegetation Status Map (SM) - Quality map

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   Markus Neteler

   Last changed: $Date: 2008-03-18 10:54:11 -0500 (ÐÑ, 18 Ð¼Ð°Ñ 2008) $

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References

   1. file://localhost/root/tmp/2/fin/r.in.gdal.html
   2. http://free.vgt.vito.be/
   3. http://www.vgt.vito.be/faq/faq.html
   4. http://www.vgt.vito.be/faq/FAQS/faq15.html