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Here is a mystery? (conflicting map files) - Solved

L.Rouge
over 4 years ago

I have a couple of additional maps loaded on my 530 that seem to have become mutually exclusive.

These were happy to co-exist until a few days ago but something has changed?

I have Australian Garmin standard maps but wanted to follow some courses on my smart trainer in France so downloaded the French OSM map, worked fine except they have too much clutter, street names and complex ground (Land) cover. The "Map Visibility" controls that are supposed to allow customisation of street names (labels) and "land" cover did not seem to work so I downloaded a different format map of France (called  Garmin On-Road format from BBBike.org), these remove the street labels and ground cover, I used to use them on my 520, these also worked great on the 530

This prompted me to also download the On-Road format for my local area as I like the simple, cleaner appearance, great especially at night.

All went well until last Friday when I noticed the courses in France no longer had any map displayed, just the breadcrumb, fiddled for days until I saw that the French On-Road map was no longer listed in the Profile Map (info) List (Profile>Navigation>Map>Map Info), fiddled some more, trying many things including removing other maps from the Garmin directory, whereupon the French map reappeared in the list and worked again. I put the local On-Road map back and the French one disappeared again !!! 

Their file names are different, the internal map and image names (as displayed in the Map Info list) are different (also used Javawa Imgname), there is no overlap (15,000kms gap)

What the #!&^%$,, is going on ???

Thanks, any suggestions?

  • +1 over 4 years ago

    Do the maps have the same internal family or product ID's?  Maps from the same source may use the same one which would cause issues.

    If the two maps have the same codes used for the map segments that will cause problems like this too.

  • 0 over 4 years ago in reply to Wongataa

    The two maps that seem to clash are from the same site and the same format so it is possible some internal naming etc are duplicated but I cant see any via the Javawa Imgname utility. I will just leave the local additional map unused until I am doing a longer local route and use the Garmin Au maps otherwise for local and the French additional map for the trainer. It just annoys me that I can't figure it out and also annoys me that the "Map Visibility" customisation options on the 530 that should fix the initial issue just don't work.

    Thanks for your suggestions,

  • 0 over 4 years ago in reply to L.Rouge

    Disable the map you aren't using.

    You can use Javawa's device manager to change the  IDs.

  • 0 over 4 years ago in reply to dpawlyk

    I have spent too long chasing this problem down multiple rabbit holes but using Javawa Device Manager as you recommend discloses that the two maps I generated in fact have some duplicated map segment (tile?) numbers even though the areas are separated by 16,000kms. I would have thought OSM tiles had unique ids and these would be used in generating a map but apparently not?

    Just having the two maps with the duplicated ids prevents one of them being displayed in the Profile > Navigation > Map > Map Info list regardless of one or both being disabled in all profiles and I can't find any tool that will change the "segment" ids so at this time I will cut my losses and live with just having one of the maps at a time. The issue is at the download site as I have a OpenStreetMap.nl generated map covering France and it can exist with my local additional one.

    When I get time I will ask the download site why the segment / tile numbers are reused in two downloads and I will also chase Garmin for "help" with the customisation of the "Map Visibility" options to hide street labels and Land Cover as changing the options don't appear to make any difference to the map appearance.

    Thanks all

  • 0 over 4 years ago in reply to L.Rouge
    L.Rouge said:
    I have spent too long chasing this problem down multiple rabbit holes but using Javawa Device Manager as you recommend discloses that the two maps I generated in fact have some duplicated map segment (tile?) numbers even though the areas are separated by 16,000kms. I would have thought OSM tiles had unique ids and these would be used in generating a map but apparently not?

    OSM data doesn't have tiles.  The person creating the map chooses the map segment id number sequence.  If you have scripts set up to use when creating maps it is easy to not change this sequence.