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Last active October 12, 2020 16:31
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NASA Blue Marble
Raw
README.md

NASA Blue Marble

Prepared for MapTiler: http://www.maptiler.com/ or other GDAL tools

GDAL vrt

Download the high-resolution images from http://visibleearth.nasa.gov/view.php?id=73751

wget http://eoimages.gsfc.nasa.gov/images/imagerecords/73000/73751/world.topo.bathy.200407.3x21600x21600.A1.jpg
wget http://eoimages.gsfc.nasa.gov/images/imagerecords/73000/73751/world.topo.bathy.200407.3x21600x21600.A2.jpg
wget http://eoimages.gsfc.nasa.gov/images/imagerecords/73000/73751/world.topo.bathy.200407.3x21600x21600.B1.jpg
wget http://eoimages.gsfc.nasa.gov/images/imagerecords/73000/73751/world.topo.bathy.200407.3x21600x21600.B2.jpg
wget http://eoimages.gsfc.nasa.gov/images/imagerecords/73000/73751/world.topo.bathy.200407.3x21600x21600.C1.jpg
wget http://eoimages.gsfc.nasa.gov/images/imagerecords/73000/73751/world.topo.bathy.200407.3x21600x21600.C2.jpg
wget http://eoimages.gsfc.nasa.gov/images/imagerecords/73000/73751/world.topo.bathy.200407.3x21600x21600.D1.jpg
wget http://eoimages.gsfc.nasa.gov/images/imagerecords/73000/73751/world.topo.bathy.200407.3x21600x21600.D2.jpg

Use the attached .vrt which creates a single large georeferenced image from all these .jpgs

gdalinfo world.topo.bathy.200407.vrt

Such file can be encoded into GeoTIFF with internal tiles and overviews for fast reading.

MapTiler Pro is more efficient on reading the individual files. To get the geolocation via ESRI World Files for the individual jpegs above see: https://gist.github.com/klokan/b654b18367f372d58c58

Raw
world.topo.bathy.200407.vrt
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<SRS>GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9108"]],AUTHORITY["EPSG","4326"]]</SRS>
<GeoTransform> -1.8000000000000000e+02, 4.1666666666666666e-03, 0.0000000000000000e+00, 9.0000000000000000e+01, 0.0000000000000000e+00, -4.1666666666666666e-03</GeoTransform>
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</SimpleSource>
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