Bug report/feature request
3
votes
Export as GPXX
Started by
Mark Erzen
on
Mar 05, 10
Check out bikehike.co.uk, which allows export of the route in Garmin GPXX format. This format allows unlimited waypoints. If you can get the route exported in GPXX with waypoints at the intersection, the turn-by-turn nav on the NUVI and Egde 605/705 devices will work perfectly.
Comments
You must be logged in to comment...Create an account real quick
Am I missing something? Currently we have a GPX route export option which does just that: mark only points at the cuesheet/coursepoint entries. Though, I suppose the GPXX benefit is that you can have turn-by-turn as well as the track itself without the 605/705 auto-routing. Interesting, I'll have to play with it a bit. Any extra info you have will be helpful!
The benefit would be for those that want to use 605/705 routing features (or any of the car/motorcycle units that do turn-by-turn.) A course point is only going to say "Turn Left" or "Turn Right" etc, but will give you the benefit of forcing the unit to follow the track you laid out.
If you use turn-by-turn navigation, you're at the mercy of the turn-by-turn calculation between those GPX points at the cuesheet entries.
Let me give you an example. On my profile is a route called SCBC 151 which rides near Interstate 77 in a sparsely populated area in Ohio. On the cue sheet at mile 4.1 my route calls for a Right Turn onto Dover-Zoar Rd and continue on that road for 7.4 miles. Garmin's "Bicycle" routing will calculate the best course for a bicycle to travel between that turn at 4.1 miles and the turn at 11.5 miles at N Tuscarawas Ave. Garmin's logic says go on the lesser-traveled road - so it will tell me to Turn Right at Blacksnake Hill Rd, then another Right at Schneider's Crossing Rd, then a Left at Co Hwy 81 and ulimately join up with that point at 11.5 miles - even though my route stayed on Dover Zoar Rd the whole way. In other words, the Garmin Edge altered my course.
Now, on the same route, if I use "Car/Motorcycle" routing - Garmin will of course tell me to Stay on Dover Zoar road, but - Between Mile Marker 13.9, the Turn onto OH 39/Stonecreek Rd and the 22.5 mile Left onto Williams Lk Rd, Garmin will tell me to ride my bike on interstate 77.
So, if you can take the track from a course, and load that into the GPXX as waypoints (or whatever they're called). I think Garmin would calculate it as I planned it on RWGPS.
So I wrote a little VB script to take the TCX file and convert it to the Garmin "GPXX" format. Now I had 281 "Waypoints" for Garmin to calculate the turn by turn. It pegged the route line to the roads very nicely. Took a second or two longer to calculate, but the navigation was perfect.
It's interesting that only 1 website (and a lousy one at that) has figured this out. Garmin must not be very good at communicating their new tricks.