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How to shrink gmapsupp image file ?

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  • How to shrink gmapsupp image file ?

    Hi there! I have this 2007 Honda Goldwing motorcycle with a GPS and I have this newer gmapsupp image file to put inside a CF card via my computer but it's not working because the size exceed 2 GB.

    So, I would like to know how to edit the file, remove some states and countries to make it under a 2 GB gmapsupp image file.

    Thanks in advance.

  • #2
    Depends on which map you're talking about? Which GPS? Is the map installed on your PC and viewable in BaseCamp?
    Last edited by SUSSAMB; 07-11-2017, 10:57 PM.
    Currently own Drive 50LMT-D, Nuvi 2508LMT-D, Nuvi 1490LMT, Nuvi 1310, Montana 650T, Etrex 20, and use Basecamp, OSM mapping
    Previously owned Etrex Legend H, Mio Navman and used Mapsource
    (please note that I am not employed by Garmin, but am a long term user of Garmin software and hardware)

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    • #3
      It's a built in Navigation system made by Garmin. I succeed in replacing the .img file but not this year.
      I have basecamp but after a few hours trying without results, I think I'd better look for help...

      Comment


      • #4
        How is the map normally updated on that device? If you use Express there should be an option to download to your PC for BaseCamp to use. Once there you can create smaller mapsets.
        Currently own Drive 50LMT-D, Nuvi 2508LMT-D, Nuvi 1490LMT, Nuvi 1310, Montana 650T, Etrex 20, and use Basecamp, OSM mapping
        Previously owned Etrex Legend H, Mio Navman and used Mapsource
        (please note that I am not employed by Garmin, but am a long term user of Garmin software and hardware)

        Comment


        • #5
          Normally it's a new CF card at the dealer (over $300.00). So, I Find a newer image file to replace the old one. Thath's it! But this time It"s a reduce sizer mather.

          If not, My map has any accuracy. I tried many programs without finding the solution.

          I've took a brief look at Express-map and it's looking a bit complicated for a newbie like me.

          There must be an easier way...

          Thanks again for your patience.




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          • #6
            Sorry. If it's on a card I can't help. Someone else may know though.
            Currently own Drive 50LMT-D, Nuvi 2508LMT-D, Nuvi 1490LMT, Nuvi 1310, Montana 650T, Etrex 20, and use Basecamp, OSM mapping
            Previously owned Etrex Legend H, Mio Navman and used Mapsource
            (please note that I am not employed by Garmin, but am a long term user of Garmin software and hardware)

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            • #7
              Thanks anyways...

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              • #8
                Hi, I'd like to help you but would need better information than the cryptic info above. Have you tried using the free Open Street maps ( http://garmin.openstreetmap.nl/ ) to install maps into BaseCamp and then selecting < 2GB of area to send to your card?

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                • #9
                  I too am trying to make my img file smaller. I have an eTrex 10 that I downloaded a topo file of North Carolina to use. The state map breaks up into smaller files. I loaded one file into my device and it shows the contour lines and roads in my area on the device correctly. I want to edit the files to only include the area I am planning to hike, such as South Mountain Park area only. When I select 'receive from device' to BaseCamp it doesn't use the topo map but displays a very basic map. I have 'Basic Map Only' deselected but that didn't change anything.

                  Is there a way to do this for the eTrex 10 or am I SOL. I did a lot of research before purchasing this unit. Most of what I read doesn?t seem to work now that I have the device.

                  Any help would be greatly appreciated.

                  Comment


                  • #10
                    You can't import a map from your device to BaseCamp. What you'll need to do is install the map to your PC for BaseCamp to use. Once you've done that you can use BaseCamp to install smaller portions of the map to your device, assuming of course it comprises numerous map tiles, which I suspect from your description it does.
                    Currently own Drive 50LMT-D, Nuvi 2508LMT-D, Nuvi 1490LMT, Nuvi 1310, Montana 650T, Etrex 20, and use Basecamp, OSM mapping
                    Previously owned Etrex Legend H, Mio Navman and used Mapsource
                    (please note that I am not employed by Garmin, but am a long term user of Garmin software and hardware)

                    Comment


                    • #11
                      This is a solution that I used some time ago for selecting a sub-area from img map:
                      1. Download and install GPSMapEdit (I believe it's free for non-commercial use).
                      2. Import the img file into GPSMapEdit.
                      3. Select the area of interest.
                      4. Trim the non-selected area.
                      5. Export the remaining area into Polish Format.
                      6. Compile the exported file into img using cgpsmapper.
                      7. Upload img file into device.

                      The procedure is tricky and requires some effort to understand the principles of garmin-formatted maps, but it's the only feasible way that I can think of. Since it was some time ago that I last performed this procedure, I cannot provide you with details on how to operate the GPSMapEdit software, nor where to find it (especially cgpsmapper might be tricky to find as it has been abandoned for a long time, I think).

                      Some remarks:
                      • The procedure will not work with locked maps. No chance. Forget it.
                      • The procedure becomes more complicated when the img file is in fact a multi-map file (like for example commercial maps found on some nuvi devices), as those do not work properly in GPSMapEdit. Unpacking the multi-map img into separate single-map img files is required, but I cannot recall the name of the tool I used to do that.
                      • Point 6 can sometimes fail for various reasons. In that case manual editing of the Polish Format file is required, but this is way beyond the scope of this forum.
                      Current: nuvi 255, eTrex 30, Forerunner 310XT, Forerunner 735XT, HRM-Tri, HRM-Swim, SDM4, Virb Elite
                      Retired: eTrex Legend, Swim

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                      • #12
                        Thank you for the response SUSSAMB. How do I get the file into BaseCamp? It isn?t a Garmin Product so BaseCamp doesn?t recognize it as an installed map but it is in an .img file format.

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                        • #13
                          Thank you for the response tmk2. I have GPSMapEdit installed but there is little documentation on how to use it and my efforts have been futile. I am unable to find a legitimate download for cGPSmapper. Most of the links point to a website called Monster-something-or-other and contains a virus.

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                          • #14
                            Originally posted by Tewhano View Post
                            Thank you for the response tmk2. I have GPSMapEdit installed but there is little documentation on how to use it and my efforts have been futile.
                            I don't have access to my personal computer now, so for the moment I cannot assist you any further. Sorry.


                            I am unable to find a legitimate download for cGPSmapper. Most of the links point to a website called Monster-something-or-other and contains a virus.
                            That's what I was affraid of. I might have a precompiled binary for the Linux OS somewhere lying around on my personal computer, but it'll be a couple of days before I have access to it. If I manage to come up with something of use I'll let you know. But don't hold your breath.
                            Current: nuvi 255, eTrex 30, Forerunner 310XT, Forerunner 735XT, HRM-Tri, HRM-Swim, SDM4, Virb Elite
                            Retired: eTrex Legend, Swim

                            Comment


                            • #15
                              Originally posted by Tewhano View Post
                              Thank you for the response tmk2. I have GPSMapEdit installed but there is little documentation on how to use it and my efforts have been futile. I am unable to find a legitimate download for cGPSmapper. Most of the links point to a website called Monster-something-or-other and contains a virus.
                              You'll need to go to where you got the map from. Many sites also supply an .exe file so you can install the map to your PC for BaseCamp to use.
                              Currently own Drive 50LMT-D, Nuvi 2508LMT-D, Nuvi 1490LMT, Nuvi 1310, Montana 650T, Etrex 20, and use Basecamp, OSM mapping
                              Previously owned Etrex Legend H, Mio Navman and used Mapsource
                              (please note that I am not employed by Garmin, but am a long term user of Garmin software and hardware)

                              Comment

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