public HorizontalCS(VerticalCord vertical, HorizontalCord horizontal) : base(vertical, horizontal) { }
public CoordinateSystem(VerticalCord v, HorizontalCord h) { vertical = v; horizontal = h; }
public GeographicCS(VerticalCord vertical, HorizontalCord horizontal) : base(vertical, horizontal) { }
public CoordinateSystem() { vertical = new VerticalCord(); horizontal = new HorizontalCord(); }