nmeatoolkit

A comprensive software collection for nmea manipulation; it includes a library and a collections of command line tools.

Library

• pipes: converts nmea sentence to other nmea sentences
• translators: converts nmea sentence stream to other format
• inputs: sources for nmea sentences
• output: output helpers

Tools

• nmea2gpx: converts nmea sentences to gpx (with extensions)
• stalk2nmea: converts $STALK to native nmea sentences
• nmea2polar: extracts polars from nmea
• nmeatk: the raw toolkit

All commands has the same input/output interface as follows:

cat *.nmea > stalk2nmea -i -- > mod.nmea

stalk2nmea -i tcp://localhost:1011 > mod.nmea

stalk2nmea -i udp://localhost:1011 > mod.nmea

stalk2nmea -i path/file.nmea > mod.nmea

stalk2nmea -i path/file.nmea -o mod.nmea

stalk2nmea -i tcp://localhost:1011 -o udp://localhost:1012

Every command can receive a list of pipes to run, in order:

# Convert seatalk $STALK to nmea and add true wind sentences
stalk2nmea -i test.nmea -p truewind -o output.nmea

A pipe can receive parameters as follow:

# Convert seatalk $STALK to nmea, add true wind sentences, get only wind info
stalk2nmea -i test.nmea -p truewind,filter[bytype:wind] -o output.nmea

Every dedicated command can be performed by nmeatk:

nmeatk -i data.nmea -p truewind -o output.gpx -f gpx

Pipes

Filter

Crop

Seatalk

Truewind

License

MIT License

Copyright (c) 2021 - 2025 Davide Gessa

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