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. 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). Import the img file into GPSMapEdit.

Select the area of interest. Trim the non-selected area. Export the remaining area into Polish Format.

Questions and answers about gmapsupp on OpenStreetMap Help Forum. What should I do with a gmapsupp.img that. I need decent maps for hiking in Germany and Brazil. I loaded the gmapsupp.img file into a directory I.

Compile the exported file into img using cgpsmapper. 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). Torrent Backtrack 3 Final. Some remarks: • The procedure will not work with locked maps.

• 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.

The above map shows individual countries or states which maps can be downloaded. Click on the links below to go each continent downloads. Europe Zone Type of map Date of update File to install on gps/navigator device File to install on Qlandkarte GT, MapSource/BaseCamp Files to install on Mac OS X Errors (*) Europe • Enjoy all European continent in a single map (). • Possibility to calculate routes between different countries. • Weekly update of the map.

• Contour lines and topographic map also available for the whole continent. • Map for Trucks also available now for the whole continent (). Toggle Qa Pkg. • Click on right image to see map coverage (Only available for registered Users). (*) 'Errors' column files contain a set of files with different kinds of errors in OpenStreetMap data detected during the map generation, along with links to download the data and fix them easily. More information can be found in the file README_errors included in the download. (**) Contour lines have been generated from data of the Shuttle Radar Topography Mission (SRTM) of the NASA.

Courtesy NASA/JPL-Caltech. For all areas where data from were available, they have been used with preference on those from SRTM, as they notably improve the information from the SRTM.