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X-Pt, Z Axis Example

Creating a coordinate system by specifying a previously defined line and point. The line establishes the Z axis, and the second end point of the line establishes the direction of positive Z. The positive X axis passes through the previously defined point.

$$
$$ Declarations
$$
    ENTITY/PT1,LN1,CSYS1
$$
$$ Geometry Definition
$$
    PT1 =POINT/0,1
    LN1 =LINE/-1,-1,1,-1
$$
$$ Coordinate System Definition
$$
    CSYS1=CSYS/PT1,LN1

Coordinate System Defined by a Point and a Line