Simple script example to create a GeoJSON of your Trainline trips using Raildar.
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// npm install request request-promise | |
// ./data.json is Trainline Europe data export (ask the support) | |
// node trainline-data-to-geojson.js > trips.geojson | |
const fs = require('fs'); | |
const rp = require('request-promise'); | |
const computeGeojson = async () => { | |
const data = JSON.parse(fs.readFileSync('./data.json'), { encoding: 'utf8' }); | |
const legs = data.pnrs.filter(pnr => pnr.status === 'emitted').map(pnr => pnr.legs.map(leg => ({ | |
dep: leg.departure.public_id, | |
arr: leg.arrival.public_id, | |
trip: `${leg.departure.name} ❯ ${leg.arrival.name}`, | |
date: leg.departure_date, | |
}))).flat(); | |
// const legsFiltered = legs.slice(0, 20); | |
const legsFiltered = legs; | |
const features = []; | |
let i = 0; | |
for (const leg of legsFiltered) { | |
if (i++ % 10 == 0) { | |
process.stderr.write(`Processing ${i}/${legsFiltered.length}\n`); | |
} | |
const { dep, arr, ...properties } = leg; | |
try { | |
const feature = await rp(`https://trainmap.ntag.fr/api/route?simplify=1&dep=${dep}&arr=${arr}`, { json: true, timeout: 10000 }); | |
feature.properties = properties; | |
features.push(feature); | |
} catch (e) { | |
process.stderr.write(`Error with ${dep} ❯ ${arr} (${properties.trip}): ${e}\n`); | |
} | |
} | |
const geojson = { | |
"type": "FeatureCollection", | |
features, | |
}; | |
return JSON.stringify(geojson); | |
}; | |
computeGeojson().then(console.log); |
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