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#!/usr/bin/env node
/**
* Prepare import candidates by conflation category and suburb as OSM XML
*/
const fs = require('fs')
const path = require('path')
const { Transform, pipeline } = require('stream')
const ndjson = require('ndjson')
const PolygonLookup = require('polygon-lookup')
const geojsontoosm = require('geojsontoosm')
const argv = require('yargs/yargs')(process.argv.slice(2))
.option('verbose', {
type: 'boolean',
description: 'Verbose logging'
})
.argv
if (argv._.length < 3) {
console.error("Usage: ./conflate.js data/victoria-admin-level10.osm.geojson dist/conflate dist/candidates")
process.exit(1)
}
const suburbsFile = argv._[0]
const conflatePath = argv._[1]
const outputPath = argv._[2]
if (!fs.existsSync(suburbsFile)) {
console.error(`${suburbsFile} not found`)
process.exit(1)
}
if (!fs.existsSync(conflatePath)) {
console.error(`${conflatePath} not found`)
process.exit(1)
}
// output GeoJSON Features by layer by suburb ID
const outputFeatures = {
'newAddressesInBlocksWithoutAnyExisting': {}
}
for (const layer of Object.keys(outputFeatures)) {
const layerPath = path.join(outputPath, layer)
if (!fs.existsSync(layerPath)) {
fs.mkdirSync(layerPath)
}
}
// suburb GeoJSON Features
const suburbs = []
// suburb ID to name
const suburbName = {
0: 'VIC'
}
// suburb point in polygon index
let lookupSuburbs
const outsideVicSuburb = {
type: 'Feature',
id: 0,
properties: {
name: 'VIC'
},
geometry: null
}
// index suburbs
let suburbCount = 0
const readSuburbs = new Transform({
readableObjectMode: true,
writableObjectMode: true,
transform(suburb, encoding, callback) {
suburbCount++
if (process.stdout.isTTY && suburbCount % 1000 === 0) {
process.stdout.write(` ${suburbCount.toLocaleString()}\r`)
}
if (!('id' in suburb)) {
console.log('Suburb missing id', suburb)
process.exit(1)
}
for (const layer of Object.keys(outputFeatures)) {
outputFeatures[layer][suburb.id] = []
}
suburbName[suburb.id] = suburb.properties.name
suburbs.push(suburb)
callback()
}
})
function findSuburb(feature) {
// find which suburb this address is in
const results = lookupSuburbs.search(...feature.geometry.coordinates.slice(0, 2), 1)
const suburb = results ? (results.type === 'FeatureCollection' ? (results.features ? results.features[0] : outsideVicSuburb) : results[0]) : outsideVicSuburb
return suburb
}
// produce import candidates
let sourceCount = 0
const candidatesNewAddressesInBlocksWithoutAnyExisting = new Transform({
readableObjectMode: true,
writableObjectMode: true,
transform(feature, encoding, callback) {
sourceCount++
if (process.stdout.isTTY && sourceCount % 1000 === 0) {
process.stdout.write(` ${sourceCount.toLocaleString()}\r`)
}
// remove tracing properties
delete feature.properties._pfi
const suburb = findSuburb(feature)
outputFeatures['newAddressesInBlocksWithoutAnyExisting'][suburb.id].push(feature)
callback()
}
})
/**
* Save our candidate address data as .osm files by layer by suburb
*/
function outputCandidates() {
let i = 0
for (const layer of Object.keys(outputFeatures)) {
i++
let j = 0
for (const suburbId of Object.keys(outputFeatures[layer])) {
j++
if (process.stdout.isTTY && i % 10 === 0) {
process.stdout.write(` ${j.toLocaleString()}/${Object.keys(outputFeatures).length.toLocaleString()} - ${layer} - ${i.toLocaleString()}/${suburbs.length.toLocaleString()}\r`)
}
const suburbFeatures = outputFeatures[layer][suburbId]
if (suburbFeatures && suburbFeatures.length) {
const xml = geojsontoosm(suburbFeatures)
fs.writeFileSync(path.join(outputPath, layer, `${suburbId}_${suburbName[suburbId]}.osm`), xml)
} // else no data for this suburb
}
}
}
// first pass to index by geometry
console.log('Step 1/4: Reading suburbs')
pipeline(
fs.createReadStream(suburbsFile),
ndjson.parse(),
readSuburbs,
err => {
if (err) {
console.log(err)
process.exit(1)
} else {
console.log('Step 2/4: Creating index of Suburbs')
lookupSuburbs = new PolygonLookup({
type: 'FeatureCollection',
features: suburbs
})
console.log('Step 3/4: noOSMAddressWithinBlock')
pipeline(
fs.createReadStream(path.join(conflatePath, 'noOSMAddressWithinBlock.geojson')),
ndjson.parse(),
candidatesNewAddressesInBlocksWithoutAnyExisting,
err => {
if (err) {
console.log(err)
process.exit(1)
} else {
/*
console.log('Step 4/4: noExactMatch')
pipeline(
fs.createReadStream(path.join(conflatePath, 'noExactMatch.geojson')),
ndjson.parse(),
candidates,
err => {
if (err) {
console.log(err)
process.exit(1)
} else {
*/
console.log('Output candidate .osm files')
outputCandidates()
process.exit(0)
/*
}
}
)
*/
}
}
)
}
}
)
|
