trackutil

Simple lib to process, simplify and convert geolocation tracks. Currently supported:

• GPX
• KML
• CSV (time,lon,lat,ele) - empty line separates tracks

This lib will extract track coords for drawing linestrings on a map. All other information like waypoints is ignored.

Usage

Install library

npm i trackutil

Use in code

import fs from 'fs'
import { getBBox, parse, simplify } from 'trackutil'

const tracks = parse(fs.readFileSync('/path/to/track.gpx'))
console.log(`${tracks.length} tracks`)
const simple = simplify(tracks)
const bbox = getBBox(simple)
console.log(bbox)
fs.writeFileSync('./simple.csv', formatCSV(simple))

Merge and simplify tracks from command line

git checkout https://github.com/oyo/trackutil.git
cd trackutil
npm i
npm run simplify /path/to/tracks/