![]() Latitude = waypoint.Attribute( "lat").Value, Var waypoints = from waypoint in gpxDoc.Descendants(gpx + "wpt") Public string LoadGPXWaypoints( string sFile) / Normally, this would be used to populate the / string containing line delimited waypoints from / When passed a file, open it and parse all waypoints from it. / Load the namespace for a standard GPX document XDocument gpxDoc = XDocument.Load(sFile) Private XDocument GetGpxDoc( string sFile) Still it's crazy fast and I'm loading a lot of data in only a few lines of code. The biggest issue for me with Linq is the inability to debug line-by-line. Also, when working with Xml, remember that an element that doesn't exist results in a null object reference so you'll see in the code how I handled that for each element. My initial run at this netted attribute values but no element values which was really frustrating. It's really pretty straight forward once you realize that you need to pull in the namespace object and then include it in each call to an element. The original file had about 6,500 lines in it. At the end of this post is a well formed (but incomplete) GPX file. This gets it into the standardized format that nearly all other GPS units and mapping software can use and I'm ready to load my data. I load this file onto a machine with Garmin MapSource and immediately save the file as a GPX. My Garmin saves files in a GDB format which is proprietary for the product. When loaded, it will direct you to each point along the route in the appropriate order. It's essentially a list of positions you build by looking at a map or a file you get from someone else's track. RoutesĪ route is what you load into your GPS. When I get home I have a complete listing of a few hundred points on my route, depending on how far apart or how long to wait I've preset my GPS to mark between saved track points. GPS antennae have come a long way in the last few years and my inexpensive Garmin eTrex keeps pretty accurate markers even when I'm in a deep draw. When I want to mark out a trail for users of my application, I set up my GPS on my bike and just go for a ride. So when you get to the suspension bridge, mark a waypoint and you can find it again later as well as tell everyone else about it. In general, the major things that you will work with are: WaypointsĪ waypoint is a specific position that is manually marked by a user for future reference. A GPX file can contain a lot of different kinds of information. Save my name, email, and website in this browser for the next time I comment.GPX is the standardized file format for GPS file exchanges. But if your GPX file was missing elevation data at least you’ll have some now! The elevation data will be based on the dataset used by Strava (NASA, Google, OSM?) so will be subject to some error.You can easily update the OSM dataset using the excellent tools here: Some roads may not have been mapped correctly/completely in OSM and so the route may not be able to follow that path. The GPX-to-Route logic will only work correctly if the route it is trying to recreate is actually routable via the OSM API it is using.If so, refresh the page and try again or try again a little later and it should work. The Strava GPX-to-Route page sometimes shows an routing error.Head to your Routes page on VeloViewer and click on the Route name:.Save the Route and edit any bits that weren’t matched properly.Upload your GPX file and the page should do a pretty good job at creating a Route that matches the file.This method allows the route to be persisted and listed in your Routes page on VeloViewer, it also includes a list of segments covered by the Route: If you want to see it again then you’ll need to upload the GPX file each time.Ĭreate a Route in Strava from your GPX file. The route will not be stored in VeloViewer.There will be no segments shown as that requires Strava’s cleverness to match them up to the route.I’ve seen numerous GPX files that don’t include elevation data so those routes will appear flat. The lat/lng & elevation data will be whatever is included in the file.Note: You need to be a VeloViewer PRO (or PRO+) user to use this feature. The fast method – direct viewing of GPX file VeloViewer has two ways to do this, one is fast but slightly limited, the second is a bit more involved but provides all the features: Often events like sportives or races will provide GPX files of the course for you to upload to your GPS device, but I get lots of requests to be able to view those GPX files in VeloViewer in order to see 3D profiles, Google StreetView and other features of the VeloViewer Route Details page direct from these files.
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