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Chapter 27. Introduction to 3D > Defining a User Coordinate System in 3D Space

Defining a User Coordinate System in 3D Space

The UCS command provides the means of changing the location of the 0,0,0 origin point of a coordinate system, as well as the orientation of the XY plane and Z axis. Any plane or point in 3D space can be referenced, saved, and recalled, and you can define as many user coordinate systems as you require. Coordinate input and display are relative to the current UCS. In AutoCAD 2000, if multiple viewports are active, you can assign a different UCS to each.

NOTE

Prior to AutoCAD 2000, if multiple viewports were active, they all shared the same UCS. In AutoCAD 2000, to facilitate editing objects in different views, you can define a different UCS for each view. Each time you make a viewport current, you can begin drawing using the same UCS you used the last time that viewport was current.



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