I do not succeed in importing waypoints from Ozi files (extension .wpt). I tried both converting through GPS-Babel to XML (.gpx) and importing in QGIS with the GPS-tool. Both times set to WGS 84, as is the setting in Ozi.
What should I do?
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Global Mapper will convert WPT to SHP
OziExplorer Waypoint (WPT), Route (RTE), and Track (PLT) Files
Description: The OziExplorer waypoint (WPT), route (RTE), and track (PLT) file formats are used to store user waypoints, routes, and track logs from GPS devices by the OziExplorer application. The WPT and TRK files can be loaded into Global Mapper v6.00 and above, and the RTE files can be loaded into v9.01 and above.
http://www.globalmapper.com/product/formats.htm you can use a trial version to test it.
If you try to import from a GPS... You can try DNRGarmin! It takes several files (.gpx, .kml, shp, txt, etc) and can convert them to .shp files. Hope that helps.
gpsbabel is very capable, and used under the hood by many programs. It can be hard to sort out just what options to use even with the gui that's now included. I suspect for the original poster an incorrect combination of parameters was being passed, though we can't rule out internal file data corruption.
In any case, at this point you need to go to the source and use GPS Babel directly, to get a more direct view of what is going on and possible error messages.
Step 1: use a tool to help determine the right combination of command line options.
I like the online free GPS Vizualizer service. What I particularly like about gps-viz, aside from being available without installing and instant viewing gratification, is that it shows the command line used to use as templates in your own scripts.
The following GPSBabel command was executed:
gpsbabel -w -r -t -i ozi -f "2011 track.plt" -o gpx -F "2011 track.gpx"
Step 2: use the command line to inspect error messages directly
In the event the problem was unresolved in Step 1, use the command line from it in your own local console. Prepend
-D n to increase the verbosity of debugging messages, with 0 meaning none. The debugging info is format specific (some don't add very much extra detail). The following is level 3:
gpsbabel -D 3 -w -r -t -i ozi -f "2011 track.plt" -o gpx -F "2011 track.gpx" GPSBabel Version: 1.4.4 options: module/option=value: ozi/snlen="32" (=default) options: module/option=value: ozi/wptfgcolor="black" (=default) options: module/option=value: ozi/wptbgcolor="yellow" (=default) options: module/option=value: ozi/proximity="0" (=default) options: module/option=value: ozi/altunit="feet" (=default) options: module/option=value: ozi/proxunit="miles" (=default) cet_util: Converting from "US-ASCII" to "UTF-8", done. options: module/option=value: gpx/snlen="32" (=default)
Step 3: follow up on errors
Follow up on the error messages, with many round trips to the fine manual, and questions here on GIS Stack Exchange as needed. The more research and info you put into your questions the better and faster results (low effort on this question meant 3.5 years before an effort-ful answer).