Converts gps points to motion vectors
npm install vectorize
Converts gps points to motion vectors using victor library, provides three types of vectors: position, velocity, and accleration. Useful for filtering and analysis of GPS data.
Download node at nodejs.org and install it, if you haven't already.
``sh`
npm install vectorize --saveVectors:
sh`
Position {x: ∆lng, y: ∆lat}
Velocity {x: ∆lng / ∆time, y: ∆lat / ∆time}
Acceleration {x: ∆xVelocity / ∆time, y: ∆yVelocity / ∆time}Use
shPoints is expected to be an array of GPS points with a latitude, longitude, and timestamp;
Valid formats: Latitude: [lat, latitude, y]
Longitude[lng,longitude,x]
Timestamp[time, timestamp, startime]
#Coordinate data in decimal, timestamp can be in any format momentjs can handle
#ALL SPEEDS ARE IN M/S
var vectorize = require('vectorize');
.toPositions(points)
return arrayOfPositionVectors;
.toVelocities(points)
returns arrayOfVelocityVectors;
.toAccelerations(points)
returns arrayOfAccelerationVectors;
`Tests
`sh``
npm install
npm test
- [speed-filter](): Filters GPS data based on speed
- victor: A JavaScript 2D vector class with methods for common vector operations
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MIT