Existing 3-D TV (at least, the sort that does not need glasses) creates the separate images by showing them as alternating lines across the screen.
现有的3维电视（至少那种不需要眼镜的那种）通过在屏幕上不同的行列显示来达到这种不同的图像效果。
3
In short, vector data take the simplest topological entities — points, lines, and polygons — and anchor them within a 2-d Cartesian coordinate system to describe geographical features.