
Caferacer writes - "How to use a handheld GPS unit to create some really nice maps of mountain bike or hiking trails." - Link.
HOW TO - GPS enabled trail maps
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Well its kinda neat but a bit complicated.
GPS Visualizer allows you to upload from GPX, OziExplorer, Geocaching.com (.loc), IGC sailplane logs, Garmin Forerunner (.xml/.hst), Timex Trainer (v1.3+), Cetus GPS, PathAway, cotoGPS, CompeGPS, TomTom (.pgl), IGN Rando (.rdn), Emtac Trine, Suunto X9/X9i (.sdf), NetStumbler/WiFiFoFum, and of course tab-delimited or comma-separated text. (phew)
The outputs are GPS SVG, JPEG/PNG, and Google Maps format, and can also create map overlays and KML/KMZ files for Google Earth.
I've converted 2 years of GPS data to KMZ and put it in a Google Earth overlay... its depressing to see that even with all my travels I've seen a pitiful amount of this planet. Also its really neat.
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