Standstill

Find locations where there has been no movement, a stop, within a GeoJSON track, typically recorded from a GPS. Use this to analyze where a vehicle has stopped for a longer period, for example.

Install & Setup

npm install --save standstill

Usage

var standstill = require('standstill'),
    stops = standstill(geojson).stops;

The standstill function, the single function exported by the module, takes a LineString feature as argument. The feature must have a property called coordTimes which should contain dates or JavaScript timestamps for each coordinate in the linestring.

The return value is an object with two properties: stops, a FeatureCollection of the analyzed stops from the input linestring, and routes, a FeatureCollection of routes connecting the stops.

Options

• maxTimeGap: maximum allowed time (in milliseconds) between two positions before considering the period between them as "no data", for example when the unit is turned off; default 300,000 (five minutes)
• stopTolerance: maximum allowed movement (positioning jitter) during a stop, in kilometers; default 0.1 km
• stopMinTime: minimum number of milliseconds to consider something a stop; default 300,000 (five minutes)