Function createCoastlinesLayer

topojson/bin/process_geodata.mjs:166–180

({ bounds, name, resolution, source })

}

async function createCoastlinesLayer({ bounds, name, resolution, source }) {
    const inputFilePath = `${outputDirGeojson}/${unFilename}_${resolution}m/${source}.geojson`;
    const outputFilePath = `${outputDirGeojson}/${name}_${resolution}m/coastlines.geojson`;
    const commands = [
        inputFilePath,
        '-dissolve2',
        '-lines',
        bounds.length ? `-clip bbox=${bounds.join(',')}` : '',
        // Erase world border to avoid unpleasant lines through polygons crossing the border.
        '-clip bbox=-179.99999,-89.99999,179.99999,89.99999',
        `-o ${outputFilePath}`
    ].join(' ');
    await mapshaper.runCommands(commands);
    clampToAntimeridian(outputFilePath);
}

async function createOceanLayer({ bounds, name, resolution, source }) {
    const outputFilePath = `${outputDirGeojson}/${name}_${resolution}m/ocean.geojson`;