Function createSubunitsLayer

topojson/bin/process_geodata.mjs:216–229

({ name, resolution, source })

}

async function createSubunitsLayer({ name, resolution, source }) {
    // Only include USA for 'usa' scope since the UN and NE borders don't match exactly and slivers of Canada creep in
    const filter = name === 'usa' ? 'adm0_a3 === "USA"' : config.filters.subunits;
    const inputFilePath = `${outputDirGeojson}/${getNEFilename({ resolution, source })}.geojson`;
    const outputFilePath = `${outputDirGeojson}/${name}_${resolution}m/subunits.geojson`;
    const commands = [
        inputFilePath,
        `-filter '${filter}'`,
        `-clip ${outputDirGeojson}/${name}_${resolution}m/countries.geojson`, // Clip to the continent
        `-o ${outputFilePath}`
    ].join(' ');
    await mapshaper.runCommands(commands);
    addCentroidsToGeojson(outputFilePath);
}

async function convertLayersToTopojson({ name, resolution }) {
    const regionDir = path.join(outputDirGeojson, `${name}_${resolution}m`);