The directives listed below are processed by the NMEA 0183 reader. The suffixes shown are prefixed by the current <ReaderKeyword> in a mapping file.
By default, the <ReaderKeyword> for the NMEA 0183 reader is NMEA_GPS.
These directives parallel the format options provided by GPSBabel. For more information, refer to the GPSBabel documentation for this format.
DATASET
The value for this directive is the NMEA 0183 file to be read.
Required/Optional
Required
Mapping File Syntax
NMEA_GPS_DATASET /usr/data/data.txt
DATE
The value for this directive is the date to assume for tracks that do not have a date. The value is in the form of YYYYMMDD. This directive must be specified in order to read datasets containing undated track points.
Required/Optional
Optional
Mapping File Syntax
NMEA_GPS_DATE 20121031