forked from MapComplete/MapComplete
58 lines
1.9 KiB
TypeScript
58 lines
1.9 KiB
TypeScript
import { readFileSync, writeFileSync } from "fs"
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import Script from "../Script"
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import { parse } from "papaparse"
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import { FeatureCollection, Point } from "geojson"
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class ZHVcsv2GeoJson extends Script {
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constructor() {
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super("Converts a CSV file with ZHV data to GeoJSON format. Usage: csv-file output-file")
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}
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async main(args: string[]): Promise<void> {
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const csvFile = args[0]
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const outputFile = args[1]
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if (!csvFile || !outputFile) {
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console.error("Usage: csv-file output-file")
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return
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}
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// Read the CSV file and parse it using PapaParse
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const text = readFileSync(csvFile, "utf-8")
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const parsed = parse(text, {
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header: true,
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dynamicTyping: false,
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})
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console.log(`Parsed ${parsed.data.length} rows from ${csvFile}`)
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console.log(`First row:`, parsed.data[0])
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// Drop all rows that do not have a valid latitude and longitude
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parsed.data = parsed.data.filter((row: any) => {
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return row["Latitude"] && row["Longitude"]
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})
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// Convert the parsed data to GeoJSON format
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const geoJson: FeatureCollection<Point> = {
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type: "FeatureCollection",
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features: parsed.data.map((row: any) => ({
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type: "Feature",
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geometry: {
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type: "Point",
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coordinates: [
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parseFloat(row["Longitude"].replace(",", ".")),
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parseFloat(row["Latitude"].replace(",", ".")),
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],
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},
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properties: row,
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})),
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}
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console.log(`First feature:`, geoJson.features[0])
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// Write the GeoJSON output to the specified file
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writeFileSync(outputFile, JSON.stringify(geoJson), "utf-8")
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}
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}
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new ZHVcsv2GeoJson().run()
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