@signalk/tracks and @signalk/tracks-plugin

This repo contains two npm modules:

• @signalk/tracks - RxJs based module that accumulates positions into a track, using a configured time resolution and retains a sliding window of points. Contains the code for both a Signal K server plugin that implements the track api and client side "TrackAccumulator" class that manages the track for a single vessel. TrackAccumulator can optionally bootstrap the track data from the server. The result is available as Observable<LatLng[]>.
• @signalk/tracks-plugin Convenience module that exposes the plugin part of @signalk/tracks.

Tracks

Plugin for tracks accumulation and the track API

Usage:

Retrieve tracks for individual vessel:

/signalk/v1/api/tracks/<vesselId>

Retrieve tracks for all vessels:

/signalk/v1/api/tracks

If maxRadius is specified only vessels with last track position within this distance are returned.

Retrieve tracks for all vessels within a given radius (in meters) from your vessel position:

/signalk/v1/api/tracks?radius=50000

Note: This value overrides the maxRadius value specified in plugin configuration.

Retrieve tracks for all vessels within a bounded area:

/signalk/v1/api/tracks?bbox=130,-35,139,-33

Bounded area is defined as lon1, lat1, lon2, lat2

lon1, lat1 = lower left corner of bounded area

lon2, lat2 = upper right corner of bounded area