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Problem with double map display on Zumo 550 and OSM.

Hello,

I have a Japanese Garmin Zumo, currently running software v. 3.05 and GPS v. 3.00. I've tried updating the software with Garmin Express unsuccessfully. The update uploads but is not applied when the device reboots. That's a different, less troublesome problem.

Since the roads in the region surrounding me are changing a lot due to recent heavy and ongoing construction, it's important to have the latest maps.

I have tried maps from here: http://admincabal.com/osm/ which are too old and don't include important routes now available.

As well as here: http://garmin.openstreetmap.nl/ and while this map is perfect in every other way, the place names are displayed in Chinese rather than Japanese or English, and apparently the administrator there has disappeared, so that's unlikely to get fixed.

So that's where I'm at with alternative solutions.

That leaves me with the OSM maps, found here: http://tmz.skr.jp/data/gmap.html and this is the map with the double overlay problem. I have tried older versions of this map and they all suffer the same issue with displaying a double overlay map. The files in question can be found about halfway down the page and are labeled "gmapsupp_161227.zip". There are two columns, the left column is without topographic overlay, the right column is with topographic overlay. Since I'm using this for driving directions, I'm trying to use the non-topographic map.

So, this is what my problem looks like on my Zumo with pictures to explain exactly what my issue is. First of all, I have no other supplemental maps installed as shown here:
image

If you look at this image:
image

it's possible to see that there are two streets on top of eachother near the pointer. This is not because they are two different roads, this is because there are apparently two maps on top of eachother. One here:
image

and one here:
image

The second image is displaying the road from the Japan gmapbmap. Any idea if there's something I'm doing wrong, or that I can try in order to correct this, or is this a problem with the OSM source?

Thank you.

Comments

  • sussamb 947 Points
    Probably the map and the 'visibility' level set that allows the BaseMap to show through.
  • dmizer 0 Points
    Thank you for your reply. Is there something I can do to correct this, or is this something the map developers need to do?
  • sussamb 947 Points
    I'm not sure. I know in BaseCamp you can change the visibility of BirdsEye data. However Boyd should be along shortly, he's the one who can answer that question for you.
  • Boyd 2028 Points
    edited January 2017
    Not sure if I understand what you're trying to show in those pictures. Are the two overlapping "National Route 10" roads an example of the "double map display"? It's really impossible to say what the problem is from a distance, but I can think of a couple reasons why roads might be duplicated.

    The most obvious reason is that there are actually duplicate roads in the map data. I don't think that is all that unusual. For example, much of the US OSM data originated from the US Census Bureau "TIGER" maps. I have used this, and there were definitely some duplicate roads in that dataset. If that's the case, there is nothing you can do. I mean, you could try to get ahold of their source files in shapefile format, then you could correct the errors, but that is a lot more than you will want to do. ;)

    Another possibility is that that is no background polygon to the map, and therefore the basemap could show through, which I think is what @sussamb has in mind. You can't really do much about changing zoom levels with an existing map. However you could just delete the basemap (saving a backup copy first, of course) and that would prevent anything from showing through. The basemap should be in the file gmapbmap.img located in the hidden .System folder (assumingthe zumo is like the nuvi).

    But proceed with caution here - some Garmin devices are not happy if you remove the basemap and there's a chance that the Zumo could hang on startup if it isn't there. I think these problems are confined to older units, but I'm just not sure, so there is some amount of risk.

    [edit]Looking at your screenshots again, I take it that the zumo 550 actually is an older device, since the screen looks like a Nuvi circa 2007. So be careful messing with the basemap!

    Another possibility would be to replace the standard basemap with another map that is named gmapbmap.img. You would probably want to make your own custom map for that purpose. It could be as simple as a big white polygon. Explaining how to create maps is way more than I can tackle here though. ;)

    Again, there's always the risk that the zumo will not be happy without the "real" gmapbmap. file….
  • sussamb 947 Points
    Boyd said:


    Another possibility is that that is no background polygon to the map, and therefore the basemap could show through, which I think is what @sussamb has in mind. You can't really do much about changing zoom levels with an existing map.

    I know my TalkyToaster UK map had the transparency set low so the basemap showed through. Martin (aka TalkyToaster) provided me with another copy where the transparency was set higher, so the basemap was hidden.
  • Boyd 2028 Points
    I think there is some confusion with terminlogy here. :) You can't set transpareny "high" or "low". Normal maps have a polygon corresponding to their coverage area that is called a background object. If there is no background object, then other maps will show through. Now you could also have an invisible background object and that would accomplish the same thing. But it isn't like a photoshop layer where you can set the "transparency". Maps also have a draw order value, and higher numbered maps cover up lower numbers. The basemap should have the lowest possible draw order (0) so any "normal" map will cover it. You can change draw order yourself using gmaptool. Not sure, but one of JaVaWa's apps might also be able to do it.

    Now when you zoom way out, I think the basemap roads can show through even with a solid background. But that should only happen when you zoom WAY out. @dmizer's screenshots show an 80m zoom level (comparable to .5 miles I guess). This should not be happening at such a close zoom. I wouldn't expect that unless zooming to perhaps 5 miles (8km, or whatever the comparable level is).

    This would be affected by the zoom levels assigned to different road objects in the .img file and would require the mapmaker to recompile, as in your TalkyToaster example. Were you seeing the basemap in TalkyToaster when zoomed in as close as the examples above? That would be unusual. :)
  • Boyd 2028 Points
    edited January 2017
    Re-reading all of this… if you're sure it is really the basemap you're seeing, then I think the best solution is to remove the basemap or replace it with a blank one (or one that doesn't cover Japan). If the problem really is the zoom levels of the roads, AFAIK that would require editing and re-compiling of the map.
  • sussamb 947 Points
    Ah, that rings a bell ... for 'transparency' read 'draw order value' ;)
  • dmizer 0 Points
    Good morning, and thank you for the replies.

    First of all, I have indeed tried removing the base map from the device. When I did that, the map display was simply blank.

    Second, I'm absolutely positive that the underlying map is the base map. I will try a base map that doesn't cover Japan and see if that corrects the issue.

    Finally, I've discovered another troubling problem. When I map a route, the pink line that indicates the driving route is displayed below the supplementary map. The line draws along the supplementary maps roads, but underneath them, so it's barely visible. With this in mind, I think it's quite clear that I have a draw order value problem.

    So, is there a way that I can correct this with basecamp or do I need to communicate with the map developers?

    Thank you again for all your assistance.
  • Boyd 2028 Points
    Something must be very strange with that map. You can change draw order with gmaptool, but the basemap has a draw order of zero, which is the lowest possible value. gmaptool will tell you what the OSM map draw order is.

    Sounds like that map is messed up, or perhaps just not compatible with your zumo which is apparently a rather old device.
  • dmizer 0 Points
    The GMapTool shows the display priority to be 1
    image

    I think I see a few problems with the base map though. First of all, it's labeled as a CN (Chinese) base map, which may have been causing me problems with other maps as well.

    Here's the GMapTool output for my basemap:
    Program start.

    ====================================================================
    Input file: E:/Garmin/gmapbmap.img.
    Reading file E:/Garmin/gmapbmap.img.


    File: E:/Garmin/gmapbmap.img, length 13758464
    Header: 27.10.2014 13:43:31, DSKIMG, XOR 00, V 15.00, Ms 0
    Mapset: CN Japan NT Zumo Basemap V15
    fat: 1000h - 1200h - 7000h, block 2048
    maps: 5, sub-files 19

    Sub-file fat length
    ROAD_V15 LBL 1200h 1193862
    CP 932, Japanese (Full Lexical Sort)
    ROAD_V15 RGN 1800h 3757523
    ROAD_V15 TRE 2800h 184663
    map 5266b9 (5400249)
    PID 1, FID 3303, region 0,0
    date 09.12.2013 18:26:57
    priority 0, parameters 0 1 15 36
    levels [12,13,14,16,18,20], zoom [86,85,4,3,2,1]
    N: 46.000443, S: 22.999878, W: 121.999741, E: 150.000458
    Japan Routable Base Map v15
    Copyright 1995-2013 by GARMIN Corporation.
    ROAD_V15 NET 2A00h 1567812
    ROAD_V15 NOD 3200h 5575680
    ROAD_V15 SRT 4A00h 20669
    EXIT_V15 LBL 4C00h 226826
    CP 932, Japanese (Full Lexical Sort)
    EXIT_V15 RGN 4E00h 152955
    EXIT_V15 TRE 5000h 46998
    map 5266b7 (5400247)
    PID 1, FID 3303, region 0,0
    date 09.12.2013 17:14:35
    priority 10, parameters 1 2 16 34, transparent
    levels [19,20,21,22,23,24], zoom [85,4,3,2,1,0]
    N: 50.000024, S: 19.999967, W: 119.999971, E: 155.000010
    Japan Exit Base Map v15
    Copyright 1995-2013 by GARMIN Corporation.
    EXIT_V15 SRT 5200h 20669
    WORLD_V1 LBL 5400h 32659
    CP 932, Japanese
    WORLD_V1 RGN 5600h 734346
    WORLD_V1 TRE 5A00h 21618
    map 5266b8 (5400248)
    PID 1, FID 3303, region 0,0
    date 09.12.2013 17:19:51
    priority 0, parameters 0 1 1 0
    levels [10,11,12,13,14,16], zoom [88,87,6,5,4,3]
    N: 75.003662, S: -60.007324, W: -180.000000, E: 180.000000
    Japan World BaseMap v15
    Copyright 1995-2013 by GARMIN Corporation.
    WORLD_V1 SRT 5C00h 1179
    CUSICDIS LBL 5E00h 25530
    CP 932, Japanese (Full Lexical Sort)
    CUSICDIS RGN 6000h 112812
    CUSICDIS TRE 6200h 12752
    map 526925 (5400869)
    PID 1, FID 3303, region 0,0
    date 25.12.2013 15:37:35
    priority 10, parameters 1 2 16 34, transparent
    levels [18,19,20,21,23], zoom [84,3,2,1,0]
    N: 50.000067, S: 19.999924, W: 119.999971, E: 155.000010
    Japan CusIC Basemap v15
    Copyright 1995-2013 by GARMIN Corporation.
    CUSICDIS SRT 6400h 20669
    ZUMOBASE MPS 6600h 268

    Map length s-f CP prio PID FID name
    ROAD_V15 MPC 12300209 6 932 0 1 3303 ROAD_V15 >- >CN Japan NT Zumo Basemap V15
    EXIT_V15 MPC 447448 4 932 10 T 1 3303 EXIT_V15 >- >CN Japan NT Zumo Basemap V15
    WORLD_V1 MPC 789802 4 932 0 1 3303 WORLD_V1 >- >CN Japan NT Zumo Basemap V15
    CUSICDIS MPC 171763 4 932 10 T 1 3303 CUSICDIS >- >CN Japan NT Zumo Basemap V15
    ZUMOBASE MPS 268 1

    Data MPS
    F: PID 1, FID 3303, CN Japan NT Zumo Basemap V15
    L: PID 1, FID 3303, map 526925, (0 0), CUSICDIS >- >CN Japan NT Zumo Basemap V15
    L: PID 1, FID 3303, map 5266B7, (0 0), EXIT_V15 >- >CN Japan NT Zumo Basemap V15
    L: PID 1, FID 3303, map 5266B9, (0 0), ROAD_V15 >- >CN Japan NT Zumo Basemap V15
    L: PID 1, FID 3303, map 5266B8, (0 0), WORLD_V1 >- >CN Japan NT Zumo Basemap V15



    End.

    ====================================================================
    Input file: E:/Garmin/gmapbmap.img.
    Reading file E:/Garmin/gmapbmap.img.


    File: E:/Garmin/gmapbmap.img, length 13758464
    Header: 27.10.2014 13:43:31, DSKIMG, XOR 00, V 15.00, Ms 0
    Mapset: CN Japan NT Zumo Basemap V15
    fat: 1000h - 1200h - 7000h, block 2048
    maps: 5, sub-files 19

    Sub-file fat length
    ROAD_V15 LBL 1200h 1193862
    CP 932, Japanese (Full Lexical Sort)
    ROAD_V15 RGN 1800h 3757523
    ROAD_V15 TRE 2800h 184663
    map 5266b9 (5400249)
    PID 1, FID 3303, region 0,0
    date 09.12.2013 18:26:57
    priority 0, parameters 0 1 15 36
    levels [12,13,14,16,18,20], zoom [86,85,4,3,2,1]
    N: 46.000443, S: 22.999878, W: 121.999741, E: 150.000458
    Japan Routable Base Map v15
    Copyright 1995-2013 by GARMIN Corporation.
    ROAD_V15 NET 2A00h 1567812
    ROAD_V15 NOD 3200h 5575680
    ROAD_V15 SRT 4A00h 20669
    EXIT_V15 LBL 4C00h 226826
    CP 932, Japanese (Full Lexical Sort)
    EXIT_V15 RGN 4E00h 152955
    EXIT_V15 TRE 5000h 46998
    map 5266b7 (5400247)
    PID 1, FID 3303, region 0,0
    date 09.12.2013 17:14:35
    priority 10, parameters 1 2 16 34, transparent
    levels [19,20,21,22,23,24], zoom [85,4,3,2,1,0]
    N: 50.000024, S: 19.999967, W: 119.999971, E: 155.000010
    Japan Exit Base Map v15
    Copyright 1995-2013 by GARMIN Corporation.
    EXIT_V15 SRT 5200h 20669
    WORLD_V1 LBL 5400h 32659
    CP 932, Japanese
    WORLD_V1 RGN 5600h 734346
    WORLD_V1 TRE 5A00h 21618
    map 5266b8 (5400248)
    PID 1, FID 3303, region 0,0
    date 09.12.2013 17:19:51
    priority 0, parameters 0 1 1 0
    levels [10,11,12,13,14,16], zoom [88,87,6,5,4,3]
    N: 75.003662, S: -60.007324, W: -180.000000, E: 180.000000
    Japan World BaseMap v15
    Copyright 1995-2013 by GARMIN Corporation.
    WORLD_V1 SRT 5C00h 1179
    CUSICDIS LBL 5E00h 25530
    CP 932, Japanese (Full Lexical Sort)
    CUSICDIS RGN 6000h 112812
    CUSICDIS TRE 6200h 12752
    map 526925 (5400869)
    PID 1, FID 3303, region 0,0
    date 25.12.2013 15:37:35
    priority 10, parameters 1 2 16 34, transparent
    levels [18,19,20,21,23], zoom [84,3,2,1,0]
    N: 50.000067, S: 19.999924, W: 119.999971, E: 155.000010
    Japan CusIC Basemap v15
    Copyright 1995-2013 by GARMIN Corporation.
    CUSICDIS SRT 6400h 20669
    ZUMOBASE MPS 6600h 268

    Map length s-f CP prio PID FID name
    ROAD_V15 MPC 12300209 6 932 0 1 3303 ROAD_V15 >- >CN Japan NT Zumo Basemap V15
    EXIT_V15 MPC 447448 4 932 10 T 1 3303 EXIT_V15 >- >CN Japan NT Zumo Basemap V15
    WORLD_V1 MPC 789802 4 932 0 1 3303 WORLD_V1 >- >CN Japan NT Zumo Basemap V15
    CUSICDIS MPC 171763 4 932 10 T 1 3303 CUSICDIS >- >CN Japan NT Zumo Basemap V15
    ZUMOBASE MPS 268 1

    Data MPS
    F: PID 1, FID 3303, CN Japan NT Zumo Basemap V15
    L: PID 1, FID 3303, map 526925, (0 0), CUSICDIS >- >CN Japan NT Zumo Basemap V15
    L: PID 1, FID 3303, map 5266B7, (0 0), EXIT_V15 >- >CN Japan NT Zumo Basemap V15
    L: PID 1, FID 3303, map 5266B9, (0 0), ROAD_V15 >- >CN Japan NT Zumo Basemap V15
    L: PID 1, FID 3303, map 5266B8, (0 0), WORLD_V1 >- >CN Japan NT Zumo Basemap V15



    End.

    ====================================================================
    Reading file E:/Garmin/gmapbmap.img.


    File: E:/Garmin/gmapbmap.img, length 13758464
    Header: 27.10.2014 13:43:31, DSKIMG, XOR 00, V 15.00, Ms 0
    Mapset: CN Japan NT Zumo Basemap V15

    Map length s-f CP prio PID FID name
    ROAD_V15 MPC 12300209 6 932 0 1 3303 ROAD_V15
    EXIT_V15 MPC 447448 4 932 10 T 1 3303 EXIT_V15
    WORLD_V1 MPC 789802 4 932 0 1 3303 WORLD_V1
    CUSICDIS MPC 171763 4 932 10 T 1 3303 CUSICDIS
    ZUMOBASE MPS 268 1

    Data MPS
    F: PID 1, FID 3303, CN Japan NT Zumo Basemap V15



    End.
  • dmizer 0 Points
    Well, I think I'll have to contact the developer.

    I happen to have two Zumo 550 units. Both of them have the same display problem with this map but not with other maps available.
  • dmizer 0 Points
    Basecamp also shows the problem, even with other maps.

    Here's a close zoom with the basemap only displayed:
    image

    And here's the same area with the OSM overlay with the basemap still showing through:
    image
  • Boyd 2028 Points
    edited January 2017
    Not sure why you are suspicious about the basemap. "CN" usually means "City Navigayor" in Garmin-speak and not "Chinese".

    A draw priority of 1 seems unnecessarily low, but I don't think that is the problem. Just look at the gmaptool output, this is a TRANSPARENT map. This is what I suggested earlier. If the map is transparent, you will see everything below it.

    So we are back to the idea of making your own blank map. If it were me, I would give the blank map a draw priority of 2 and change the priority of the OSM map to 3 or 4. On the GPS you would enable both maps. This way, you wouldn't need to do anything with the basemap because your blank map would cover it with a big white polygon.
  • dmizer 0 Points
    Not sure why you are suspicious about the basemap. "CN" usually means "City Navigayor" in Garmin-speak and not "Chinese".
    Yes, I learned that after I posted. My confusion came from the fact that "cn" is the iso country code for China. Sorry about that.

    I'll see if I can figure out how to edit the maps as you've illustrated.
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