Leaderboard

It does really work. You probably missed one step or two during the process. One method you can do to check whether the file is NT or non-NT is by using GPSMapEdit, because it won't open NT format otherwise it will. Here I show you the snapshot when I try to open an NT format file in GPSMapEdit. Here is the same file with a non-NT format. OK, since I cannot edit my previous post, I am going to re-explain the procedures here. I enclose some snapshots for the clarity. Open the GMAP Tool Add the NT formatted img file/s (in my case, filename is 62320070.img) Go to Split tab and create subfiles. Click Split All. Download Garmin-GMP-extractor.exe tool and then put it in the same folder with your working files. Drag the GMP file into the Garmin GMP extractor tools. It will explod/extract the GMP fiel into five type of subfiles (.LBL, .NET, .NOD, .RGN and .TRE) Back to GMAPTool. Add those subfiles. Go to Join tab. Name the output file and directory. We can give mapset name. And the click Join all. FINALLY, the result is another img file with non-NT format. If you watch closely there is a slight difference of filesize between both files.

You can actually convert NT into non-NT using GMapTool. First, you split the img file into subfiles, the result would be a GMP format. With the help of THIS TOOL, then you can extract the GMP into five type of subfiles (.LBL, .NET, .NOD, .RGN and .TRE). Recompile those five subfiles into non-NT IMG file with GMapTool (use join tab). Using GPSMapedit you can save the non-NT IMG into polish format. And finally convert it into shapefile either using registered version of GPSMapedit or Global Mapper.