Has Anybody Here Overlaid One Map On Another Map?
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    18 years
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As posted above, has anybody here overlaid one map on another? The reason I ask is because I have been using two maps that I download from BBBike.org. They are:
Garmin Cycle (Latin 1)
Garmin Ontrail (Latin 1)
The reason that I want to do this is I am finding some of my bike rides take me on paved bike paths, which OSM refers to as "Cycleways", and trails. (OSM is what Garmin Cycle and Ontrail are based on.) My Garmin Zumo XT does a pretty nice job routing me on many/most bike paths, but sometimes I will be on a paved multi-use path and Garmin will try to route me back to an established road when I am using Garmin Cycle.
Garmin Ontrail doesn't always list the street names when use it, so if I could merge or "overlay" Garmin Cycle and Garmin Ontrail, it would be much more useful to me and probably others as well.
To do what you're wanting to
To do what you're wanting to do, one of the maps would need its base layer removed so it could be overlaid on the other map. This requires editing the map using software. And...I'm not certain such software would work on a NT map as I haven't tried it.
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