rtknmea(1)

NAME
rtknmea - collate and convert NMEA data output by rtkgps

SYNOPSIS
rtknmea -h
rtknmea -c [-n] [-o path] infile [infile] ...
rtknmea -g [-n] [-o path] [-t tmin] [-d dmin] infile [infile] ...

DESCRIPTION
rtknmea collates or converts ...

OPTIONS

-h  Display usage information.

-n  Allow overwriting of existing files on output.

-o path
    In collate mode path must refer to a directory in which the output is written. If this option is not specified, output is written to the current directory. In GPX convert mode, path is either a regular file into which all output is written, or a directory in which the default output file name is constructed. If no output path is specified, the output file name is constructed by substituting the .nmea extension of the first input file name for .gpx.

-c  Select collate mode, in which the NMEA input files specified on the command line are all read, and the fixes contained therein are collated into a set of output files, one for each day for which a fix is present.

-g  Select GPX convert mode, in which the NMEA input file(s) is (are) converted into GPX format. This conversion is provided since the conversion performed by gpsbabel on rtkgps NMEA files is not entirely correct, due to expected information which is not present in the logger data. Note that output is formatted according to GPX 1.0, and not the more recent GPX 1.1, which lacks a standard tag for specifying a speed measurement. The GPX file may be validated using the command "xmllint --noout --schema http://www.topografix.com/GPX/1/0/gpx.xsd gpxfile". If other output formats are desired, the resulting GPX data may be used with gpsbabel to produce the desired format.

-t tmin
    Apply time filter to track segment list, omitting fixes with a time difference less than tmin seconds from the preceeding retained fix.

-d dmin
    Apply distance filter to track segment list, omitting fixes with a distance less than dmin metres from the preceeding retained fix.

AUTHOR
Brendt Wohlberg <osspkg@gmail.com>

COPYRIGHT
Copyright © 2010 Brendt Wohlberg <osspkg@gmail.com> This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License <http://www.gnu.org/licenses/gpl-2.0.txt>. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

SEE ALSO
rtkgps(1) gpsbabel(1) xmllint(1)