OSM Maps in Central & South America

Discussion in 'Mapping & Navigation' started by guyfawkes, Dec 21, 2017.

  1. guyfawkes

    guyfawkes Move along, nothing to see here

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    What's everyones experience with using OSM Maps in Central & South America.

    Im getting to the point where I just wanna toss my Montana out the Window cause the Maps are so damn inaccurate. Its not uncommon to enter a town and half the place is missing from the maps.
    frequent route calculation errors(recently the very simple route from cusco to puno in peru).

    I really dont have the coin to spend no Garmin Maps and I somewhat doubt if they are any better...
    #1
  2. Myway

    Myway Long timer

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    Which maps are on it?

    You do not have to trow away the montana because there are maps for it that have as base the openstreetmap database.

    http://garmin.openstreetmap.nl/

    You just have to put them on and they are free.
    Updated very often. So update often yourself.


    Lately I have done some tagging in Openstreetmap, because of the Dakar.
    When routes do not work, with base openstreetmap, you can find it out where it is stuck. By use a website like this.
    Cuzco Puno.
    Narrowing the route to the broken element.
    But here is seems okay.

    It is possible that ways aren not connected well with a node. A line in Openstreetmap is a way, it have a begin and a end node and in between a line. These nodes have gps lat lon.

    Ways drawn in openstreetmap have tags, also nodes have tags.
    These ways and tags (highway=) are needed for route calculation.
    There could be a ford, bridge, gate in the road, and tagged so, it depends on the route engine how this is used. The access of the road.

    For peru, I only tag road for the moment with a aerial image background.
    It depends on how active people are to tag in a area. There is not a quality of the same level.
    In more rural area there still roads missing or towns/villages not drawn in or half.
    It is as it is, but getting better.

    Cuzco Puno aerial background switch layers.
    You can export a gpx file and use it in your montana.

    Or a other site.

    I should plan a route outside of the montana.

    If something is missing you can make a note. Base Openstreetmap.
    You see there lots of notes, if you sign in and make a note you get a notification, when the note is deleted/solved.

    If you then look into a editor you see how villages not completely drawn in.
    Or roads are missing.
    #2
  3. HarveyM

    HarveyM Been here awhile

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    #3
    MikeS likes this.
  4. MikeS

    MikeS Fur shur! Vamos!

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    I don't understand everything Myway is explaining. I have also experienced the issues with routes that you posted above.

    I navigate on my Montana following tracks, not routes. That makes all the difference and eliminates the issue you posted about. To set up a track, I do that on basecamp on a small computer I carry while traveling. I do the planning the night before or in the morning.

    Maybe a track can be set up directly on the gps, but I don't know how to do that. Route mode on the gps periodically does not work because of glitches in the map sets.

    As far as missing city streets on the map set, maybe you don't have the full map set downloaded to your gps. I had that problem in Ecuador, but I was able to reload the map set to include more detail. Some small towns do not have full map sets, so in that case be happy with the price of OSM maps (free).

    Perut is good in Peru, often better than OSM, although both compliment each other.
    #4
  5. HarveyM

    HarveyM Been here awhile

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    Thinking more about this- if you can hookup with some local riding groups they're have the best suggestions & I'm sure they'll love to help you out.
    #5
  6. jonz

    jonz Miles are my mantra

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    Five years ago, I had very good luck with OSM maps in Chile and Ecuador (I don't recall any problems), ok luck in Colombia and Bolivia (I remember a few problems), and wildly varying luck in Peru (sometimes great and other times non existent).
    #6
    HarveyM likes this.