What layers support snap-to functions?

markmacallister

22 February 2018 02:01

Folks: Is there a list on gaiagps.com that shows what layers will--and will not--support the snap-to function?

I am trying to plot a route on the North Country National Scenic Trail through the Rainbow Lake Wilderness Area in Wisconsin. The Gaia Topo map shows the trail along a particular line. However, the USFS 2016 layer, the MapBox layer and the USGS topo layer all show the trail on a line that is quite different from what's found on the Gaia Topo. Finally, the paper map I have from the North County Trail organization shows that the correct route is the one reflected on the USFS/USGS/MapBox layers.

Unfortunately, I cannot build a route on the USFS/USGS/MapBox layers. All I get between the route points are straight lines. I can, however, easily build a snap-to route on the Gaia Topo--though that route differs fairly significantly from the one the appears in the paper map.

I'm coming to the conclusion that many, if not most, layers on GaiaGPS.com do not support snap-to functions. Is that the case? If so, where might I find a list of what layers do and do not support the function?

Thanks so much for your assistance.

 

Mark MacAllister

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  Ashli Baldwin

  23 February 2018 00:45

  Hi Mark,

  I'd be happy to give you more information.

  Maps that snap-to-trail can work with

  The snap-to-trail router knows where trails are based on OpenStreetMap data. That's why maps that are based on OpenStreetMap (like Gaia Topo) work with snap-to-trail the best.

  I recommend using Gaia Topo, OpenHikingMap or OpenCycleMap when creating a route, but there are a few others in the app that you could use.

  To check if a map is based on OSM, look for the attribution '© OpenStreetMap' found in the bottom corner of the map.

  Getting your route for the North Country Trail

  You mentioned that Gaia Topo doesn't have the same route that the North County Trail Organization recommends. In this case, I'd recommend downloading the official NCT route here (click download dataset and select KML): http://gis-nct.opendata.arcgis.com/datasets/438b8aeacb42463f9e3f1ff308ee507b_2?geometry=-91.301%2C46.359%2C-91.192%2C46.377

  You can upload that directly to Gaia GPS at gaiagps.com/upload.

  Also, with the NCT's permission, you could upload that data to Openstreetmap. We wrote a blog post detailing how you can contribute to OSM: http://blog.gaiagps.com/map-your-world-with-openstreetmap/

  After your OSM changes get processed, the OSM-based maps in Gaia GPS will update, too, with the new route. 

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  markmacallister

  24 February 2018 03:14

  Greetings Ashli: Thanks so much for your thorough and substantive reply. I will upload the NCT map (plus a couple of other datasets they have available) to Gaia. I'm looking forward to seeing the results!

  Thanks again for such excellent support. GaiaGPS is a great service--I'm telling all my hiker colleagues about it and they are quite impressed as well.

  Best,

   

  Mark

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  NeluGoia

  28 February 2021 19:17

  Mark's question was simple:

  "What layers support snap-to functions?"

  I don't see an answered being delivered.

  Where is the list of maps that support snap-to functions?

  Thanks,

  Nelu

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  Jay

  01 March 2021 15:58

  Hi Nelu,
  
  Snap-to-trail uses trails displayed on the Gaia Topo map source.
  
  Here's how to add this map source:

  • Add and Manage Map Sources in iOS
  • Add and Manage Map Sources in Android
  • Add and Manage Map Sources on gaiagps.com

  
  Double-check you can see the route you are planning marked on this map.
  
  If you don't see your trail displayed on Gaia Topo, your best bet is to use the straight-line routing tool.
  
  If you can see the trail on Gaia Topo, make sure you are using the Hiking, Driving, or Cycling mode as shown here:

  • Create, Edit, and Measure Routes in the app

  • Create and Measure Routes on gaiagps.com

  
  Let me know if you have any other questions.

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