Coordinate System 
The default 2D Coordinate System is with Origin in lower left corner and Positive X axis going to the right and Positive Y axis going towards the top. You can relocate the coordinate system into a local coordinate system defined by a digitized point. This point can be a static point or a moving point thus creating a moving coordinate system.
To create a local coordinate system, right click on the point in the video or in the point table to the right of the video. Select "Use as Origin" in the Drop Down Menu. Two small axes will be displayed by the point.
Default Coordinate System
Local Coordinate System using Point #6
