You may mix the meaning of GPS and GPX. You may also mix the meaning of GPS track and GPX track.
GPS is a device aware of GPS guidance system ( whatever of used satellite systems). GPS is sometimes meant as a FPS aware smartphone application, able to provide location and navigation. GPX is XML based open text data format to store POIs (waypoints, favourites), routes and tracks. Route = planned journey = is a list of ( usually sparse and important ) start/destination and intermediate points and info for a navigating person , later such a data for a GPS navigation application. Track = record of passed journey = is a list of recorded passed positions, along with timestamps and optionally additional data like altitude or course. GPS track is real track in sense of recorded physical movement. GPX track MAY BE a real track in sense of recorded physical movement, but as well it may be a route in sense of planned movement. Many planning application providing GPX file provide a detailed route, that is formally, according to GPX specifications, track, but semantically and by its usage a route. Like BRouter GPX, of GPX generated e.g. via MapQuest in Locus, if exported from the Locus. ( e.g. the average trackpoint distance of BRouter GPX is typically 50 m ) BTW, the MapQuest has very verbosely described its navigation points. So one thing is internal format of the GPS file ( track vs route ) Another thing is how it is created ( planning = route, recording - track ) Dne 03/12/2016 v 16:48 Mo Re napsal(a): > someone wrote this in another forum regarding a similar problem: > > "Maybe you already know this, but loading GPX files containing tracks > is not going to result in any device giving you turn by turn > instructions. The tracks are nothing more than breadcrumbs dropped on > a map and the GPS has no knowledge if you're following them or not. > Tracks can be converted to routes in Basecamp to get turn by turn > guidance but I've never felt the need to do that even having ridden > many thousands of miles with track guidance over the past couple of years. > > We rode over 6,000 miles of the TAT and over 2,000 miles of my own > track route from Georgia to NY - all just using tracks loaded in > Garmin Zumo GPS (actually BMW Nav IV and NAV V devices). > > Anytime you introduce routing/rerouting into your guidance you run the > risk of the GPS sending you somewhere other than where you precisely > wanted to be. You can fix that with via points but if your > track-->route conversion is for a long distance, that's going to be a > lot of hassle to check it all along the way. You'll have to decide for > yourself if it's worth it. > > I thought you CAN get turn by turn on a gps track??? > > > > On Sunday, November 27, 2016 at 2:20:27 PM UTC-5, Mo Re wrote: > > I must begin by saying I dug through the reviews and specs of a > few android apps and tried to filter down to the best and this is > the best imho. Only Backcountry navigator has more map options > but it is more complex and will not do turn by turn routing at all. > > OsmAnd+ 2.4.7 android, navigation set to car and offline vector > maps loaded of 2 states I was traveling. > > So I began a motorcycle trip yesterday morning by navigating to a > gpx track I had imported. See attached. When I got close it > started sending me around in circles?....one way then the > next...it was soo strange....then it said "in 1 mile make a > u-turn" when I could have done it right there as I was on a 20' > wide gravel road???...then I ended up turning of turn by turn and > following the dot to the the track line which was not precise and > had be backtracking a few times for mised turns. > > 1. Is this just the fact that the gps track is using many dirt > roads and not paved? > > 2. Is osmand just not good with turn by turn routing to an > imported gpx track? > > 3. Is there other software, plugins or modes that can do this > better???...I can live without the voice guidance if the display > is correct in showing at least a rough estimate of how far to next > turn and turn direction? > > 4. Is there anywhere that explains the other navigation services, > ie YOURS, OSRM, Straight Line and if they are useful and work offline? > > tia, > > > > > -- > You received this message because you are subscribed to the Google > Groups "Osmand" group. > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected] > <mailto:[email protected]>. > For more options, visit https://groups.google.com/d/optout. -- Poutnik ( The Wanderer ) My Brouter profiles https://github.com/poutnikl/Brouter-profiles/wiki -- You received this message because you are subscribed to the Google Groups "Osmand" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
