/usr/share/osgearth/maps/nodata.earth is in osgearth-data 2.9.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | <!--
osgEarth Sample - GDAL Driver NoData
Demonstrates the use of a file with nodata. The white circle is a GeoTiff which has 0 marked as NoData so the black borders in the original imagery should show up as transparent.
-->
<map version="2">
<image driver="gdal" name="world-tiff" cache_enabled="false">
<url>/usr/share/osgearth/data/world.tif</url>
<caching_policy usage="no_cache"/>
</image>
<image driver="gdal" name="nodata-tiff" cache_enabled="false">
<url>/usr/share/osgearth/data/nodata.tif</url>
<caching_policy usage="no_cache"/>
</image>
<options lighting="false"/>
<viewpoints>
<viewpoint name="NoData" heading="0.0" height="0" lat="5.0" long="15.0" pitch="-90" range="1e6"/>
</viewpoints>
</map>
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