3D Elevation data fix

3D Elevation data fix

For people using 3D elevation data with Oziexplorer and oziTarget you may have noticed that the elevation download feature in Oziexplorer is broken. 

Unfortunately this is outside my control as Oziexplorer is not my software.  I have contacted the author of Oziexplorer several times but not had any luck getting him to fix it yet.  Maybe try emailing him yourselves to report the problem.

The failed downloads can also cause crashing issues in Oziexplorer as the zip files it downloads are corrupted and they generate corrupted *.hgt files.

These corrupted files can cause crashes when shutting down and delays while opening maps.

Removing corrupted elevation data

To remove corrupted *.hgt files as follows;

1) Navigate to the elevation data folder  C:\OziExplorer\Elevation Data\Globe\…Country….
2) Delete any files that have a .ZIP file extension or any .HGT files that are under 200kb.  The typical size is around 2mb.

Getting new data

I have found a site that you can manually download the 3 second arc .HGT tiles from an interactive download map here:

http://viewfinderpanoramas.org/Coverage%20map%20viewfinderpanoramas_org3.htm

1 second arc coverage on this site is not complete but may cover your flying area.  The interactive download map is here: http://viewfinderpanoramas.org/Coverage%20map%20viewfinderpanoramas_org1.htm

It is a bit clunky because you need to work out roughly where you are on a world map and then download that bunch of tiles.

Download, unzip and copy to the C:\OziExplorer\Elevation Data\Globe\ directory.  

It seems you can ignore the country folder and just dump them all in together and it still works or create your own sub folders by country, competition or whatever.

Finally make sure that the file path is set in Oziexplorer – 3D/Elevation > Elevation configuration.

3" data - Approx 90m resolution

Other Data sources

There are other ways to obtain the elevation DEM files such as signing up to the NASA Earth Data site here: https://urs.earthdata.nasa.gov/users/new

You can then use a nicer interface and the complete 1 Second arc (30m) coverage here: https://dwtkns.com/srtm30m/ 

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