GPSBabel: convert, manipulate, and transfer data from GPS programs or GPS receivers. Open Source and supported on MacOS, Windows, Linux, and more. Pointy clicky GUI or a command line version...
With this change the real time output of wpt->altitutude closely track between the garmin and nmea readers receiving real time data from a Garmin GPS12. wpt->geoid_height matches within rounding.
With this change the real time output of wpt->altitutude closely track between the garmin and nmea readers receiving real time data from a Garmin GPS12. wpt->geoid_height matches within rounding.