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@signalk/signalk-schema
Advanced tools
This repository contains the (working) specification for Signal K, defined in JSON Schema files, tests for the schema files and assorted JavaScript utilities for working with Signal K delta and full JSON data as well as validation utilities.
The Free and Open Source universal marine data exchange
Signal K is about publishing a common modern and open data format for marine use. A format for the modern boat, compatible with NMEA, friendly to WiFi, cellphones, tablets, and the Internet. A format available to everyone, where anyone can contribute.
Find out more at signalk.org. Then join the mailinglist by sending an email to signalk+subscribe@googlegroups.com or follow the discussion via the Signal K Google Groups forum.
The master
branch contains the latest version of the Schema. When making
changes, please clone this repo to your local machine and set up a new branch
(git checkout -b branch_name
). Send in a pull request for every change, put
it up for discussion in the mailing list and then (when a consensus has been
reached) merge it into master
.
The gh-pages
branch contains the currently published version of the schema
and specification. Documentation is generated with Gitbook and published at
http://signalk.org/specification/master/. Documentation is published on the web
with a single npm command:
$ npm run docs:publish
See below for details.
The documentation .md sources are at https://github.com/SignalK/specification/tree/master/gitbook-docs.
Requires separate installation of ebook-convert
, see
https://toolchain.gitbook.com/ebook.html.
npm run docs:serve
for local previewnpm run docs:all
to generate locallynpm run docs:publish
to publish in gh-pages.The changelog in the documentation is generated based on Github Pull Requests. For things to show up in the changelog you MUST USE PRs! Rewording is possible by rewriting PR titles.
Validation against Signal K schema can be done
As you can see in the example below the current implementation assumes that the input is a subtree under vessels.mmsi path.
echo '{"navigation":{"courseOverGroundTru":{"value":70.1,"source":{"label":"","type":"NMEA2000","pgn":"130577","src":"160"},"timestamp":"2014-08-15-10:01:35.236"},"speedOverGround":{"value":0.01,"source":{"label":"","type":"NMEA2000","pgn":"130577","src":"160"},"timestamp":"2014-08-15-10:01:35.236"}}}' | bin/validate.js
Unknown property (not in schema):/vessels/230099999/navigation/courseOverGroundTru
var validate = require('signalk-schema').validate;
var result = validate(msg);
result.errors.forEach(function(error) {
console.error(error.message + ':' + error.dataPath);
});
chai.use(require('signalk-schema').chaiModule);
tree.should.be.validSignalK;
FAQs
SignalK specification schema as an npm module with tests
The npm package @signalk/signalk-schema receives a total of 209 weekly downloads. As such, @signalk/signalk-schema popularity was classified as not popular.
We found that @signalk/signalk-schema demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 5 open source maintainers collaborating on the project.
Did you know?
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