private void _setNode(int id, double lat, double lon, double ele) {
    long tmp = (long) id * rowSizeInBytes;
    da.incCapacity(tmp + rowSizeInBytes);
    da.setInt(tmp + LAT, Helper.degreeToInt(lat));
    da.setInt(tmp + LON, Helper.degreeToInt(lon));

    if (is3D()) da.setInt(tmp + ELE, Helper.eleToInt(ele));
  }