The library can be used in Ruby projects to load a GPX data for example recorded on GPS-devices and calculate:
-trip length
-average speed
-moving time and breaks
-altitude differences
GPX-files containing several tracks are supported and GPX-files can be deconstructed and the tracks included can be stored separately.
The main motivation was to provide realistic calculations for the altitude differences. Available software from Garmin (TM)(R) and also available OpenSource software sum-up all vertical deltas which due to the fractal nature of this problems results in way to high altitude differences calculated. This library tries to avoid this by filtering on crucial extrema (minimums, maximums) within a certain observation window.
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