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I’m developing an OpenGL application. I need to have a model of planet earth spinning around (with the waters in blue, the land in green). My question is not dealing with the OpenGL / graphics … but with the data.
Where can I get this data? (Of the boundaries of the various countries). Bonus points if you also know where I can get elevation data for each country.
You can get elevation from SRTM data from NASA. For country boundaries, I would download a shp file from a site like Geocommunity. You then can find one of the many open source shp file parsers to parse the data. Another possiblity for elevation data is DEM data. Here’s a discusion on working with DEM data. You can also find tile data from Nasa.