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flightgear/utils/climate
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README first commit 2 years ago
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README 

-- Data Source:

http://koeppen-geiger.vu-wien.ac.at/present.htm



Download "code with raster file:   Map_KG-Global.R"





-- Bulding:

g++ asc2a.cpp texture.cxx -o asc2a -lGL -lz -losg





-- Workflow:

1. Convert the ESRI grid to ASCII using R:

   https://groups.google.com/forum/#!topic/maxent/OrTBUvqOXaE



2. Run asc2a to convert the ASCII file to a single channel rgb file:

  ./asc2a <infile>.asc <outfile>.rgb



3. Use your favorite image processing package to convert from rgb to png

   to compress it 40x compared to the ESRI grid image and 110x compared to

   the ASCII file.