We also control where the graph appears by setting the origin using screen coordinates (see help coordinates for a discussion on the different kinds of coordinate systems).
我们还通过使用屏幕坐标（请参阅 help coordinates ，获得关于不同类型坐标系统的讨论）设置原点来控制曲线图显示的位置。
2
It also adds the value of originX, which specifies the x-coordinate of the left-most point in the graph.
它还将添加originx的值，该值将指定图形最左侧点的x坐标。
3
And, in terms of a graph, they correspond to slicing by a plane that's parallel to one of the coordinate planes, so that we either keep x constant, or keep y constant.