68 lines
2.6 KiB
JavaScript
68 lines
2.6 KiB
JavaScript
/**
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* Usage:
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*
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* node fix_elevation.js <OSM_RELATION_ID> [<ELEVATION_THRESHOLD>]
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*
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* Examples:
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* node fix_elevation.js 349001
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* node fix_elevation.js 349014 150
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*/
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const [, , area, THRESHOLD = 50] = process.argv
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const DEFAULT_DECIMALS = 6
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const ELEVATION_API = 'https://api.open-elevation.com/api/v1/lookup'
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// const ELEVATION_API = 'http://0.0.0.0/api/v1/lookup'
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const OVERPASS_API = 'https://overpass-api.de/api/interpreter'
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const OVERPASS_QUERY = `[out:json][timeout:25];area(id:${36e8 + +area})->.searchArea;node["ele"](area.searchArea);out;`
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function round (num, decimalPlaces = DEFAULT_DECIMALS) {
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const p = Math.pow(10, decimalPlaces)
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const n = (num * p) * (1 + Number.EPSILON)
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return Math.round(n) / p
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}
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async function main () {
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const { elements } = await fetch(OVERPASS_API, {
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method: 'post',
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body: 'data=' + encodeURIComponent(OVERPASS_QUERY),
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headers: {
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'Content-Type': 'application/json',
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Accept: 'application/json'
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}
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}).then(response => response.ok && response.json())
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if (!elements) return console.error(`No elements found from ${OVERPASS_API}`)
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// prepare POST data request: https://github.com/Jorl17/open-elevation/blob/master/docs/api.md#post-apiv1lookup
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const locations = elements.map(x => ({ latitude: round(x.lat), longitude: round(x.lon) }))
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const { results } = await fetch(ELEVATION_API, {
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method: 'post',
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body: JSON.stringify({ locations }),
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headers: {
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'Content-Type': 'application/json',
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Accept: 'application/json'
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}
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}).then(response => response.ok && response.json())
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if (!results) return console.error(`No results found from ${ELEVATION_API}`)
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const errors = elements.reduce((acc, x) => {
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const t = results.find(y => y.latitude === round(+x.lat) && y.longitude === round(+x.lon))
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if (!t) return acc
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if (+x.tags.ele + +THRESHOLD >= +t.elevation && +x.tags.ele - +THRESHOLD <= +t.elevation) return acc
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return [...acc, { osm: +x.tags.ele, strm: t.elevation, error: (Math.abs(t.elevation - +x.tags.ele) / t.elevation).toLocaleString(undefined, { style: 'percent' }), url: `https://www.openstreetmap.org/${x.type}/${x.id}`, type: x.type, id: x.id }]
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// return [...acc, { osm: +x.tags.ele, strm: t.elevation, url: `https://www.openstreetmap.org/${x.type}/${x.id}`, type: x.type, id: x.id, 'ref:ine': x.tags['ref:ine'] }]
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}, [])
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console.table(errors, ['osm', 'strm', 'error', 'url'])
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console.log('\nEnlace JOSM:\nhttp://localhost:8111/load_object?new_layer=true&objects=' + errors.map(x => x.type[0] + x.id).join(','))
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console.log('\nJSON de actualización:\n' + JSON.stringify(Object.fromEntries(errors.map(x => [x.id, x.strm]))))
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return errors
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}
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main()
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