
The
For-
mats
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Contributed to GPSBabel by Alex Mottram.
EasyGPS binary format (easygps)
This format can...
• read and write waypoints
This is the binary file format used by EasyGPS [http://www.easygps.com/] format is seemingly being
phased out in favor of GPX in newer versions of EasyGPS, but this allows conversions to and from the
old binary .loc format.
Information about and sketchy code to implement this file format were provided by Eric Cloninger.
FAI/IGC Flight Recorder Data Format (igc)
This format can...
• read and write tracks
• read and write routes
FAI/IGC Data File -- Used by the international gliding community to record gliding flights. IGC files can
be converted to and from tracks representing recorded flights, and routes representing task declarations
in other formats.
IGC Data Format Notes
Refer to Appendix 1 of http://www.fai.org:81/gliding/gnss/tech_spec_gnss.asp for the specification of the
IGC data format.
A sample list of software applications that use data in IGC format can be found at http://www.fai.org:81/
gliding/gnss/gnss_analysis_software.pdf
GPSBabel can be used to translate data in IGC format to and from various other formats.
Routes in other formats are used to represent IGC task declarations.
Tracks in other formats are used to represent IGC recorded flights.
Converting to IGC format
IGC files generated by GPSBabel will NOT pass security validation tests since the data they contain cannot
be proven to originate from an approved flight recorder. For most software applications that use IGC files
this is not an issue but for competition scoring, record and badge claims the generated files will not be
accepted as proof of a flight.
A track stored in another format (GPX for example) representing a recorded flight can be converted into
an IGC file:
gpsbabel -i gpx -f mytrk.gpx -o igc -F myflight.igc
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