Coordinate Systems and Measures
In Creo Simulate, most measures bear an implicit or explicit relationship to a coordinate system, whether that coordinate system is the WCS or a coordinate system you defined as current. When considering measures and their relationship to coordinate systems, be aware that all predefined measures that involve component directions use the WCS as their reference.
If you want a measure relative to a coordinate system other than the WCS, you must define a custom measure. Before defining the measure, you need to define the desired coordinate system.
If you are using a cylindrical or spherical coordinate system to define a custom measure, Creo Simulate expresses measure components differently, depending on the coordinate system's type. The following is a chart that defines the component nomenclature for all coordinate system types:
Cartesian

Cylindrical

Spherical

X

R

R

Y

T

T

Z

Z

P

Creo Simulate expresses displacement measures associated with the following directions:
• cylindrical coordinates in the T direction
• spherical coordinates in the T or P direction
Note that Creo Simulate expresses displacement measures in units of length, not angle.
To simplify discussion, Creo Simulate help refers to a Cartesian coordinate system. If you are working with a cylindrical or spherical coordinate system instead, make the appropriate substitutions.