About Creating a Coordinate System from a File

A coordinate system that is created using a transformation matrix uses a data file to construct a new coordinate system relative to an existing coordinate system. The file data defines two vectors, as follows:

• The first vector specifies the x-axis direction.

• The second vector, which is in the xy-plane (in the general direction of the new y-axis), determines the new coordinate system origin. The z-axis is automatically constructed using the right-hand rule.

The following figure illustrates the transformation of the coordinate system.

Coordinate System Transformation

The x-axis direction is determined from the matrix file and is then translated to the new coordinate system origin.

The xy-plane is constructed from the second vector in the file and translated to the new coordinate system origin.