Subject: Defining a user coordinate system



To define a UCS, you can use any of the following methods:

   Specify a new origin and points on the positive x- and y-axes.

   Specify a new origin and point on the positive z-axis.

   Align the UCS with an existing entity.    

   Rotate the current UCS around any of its axes.    

   Align the UCS with its z-axis parallel to the current viewing direction.

   Align the UCS xy plane perpendicular to the current view.

When you define a new UCS, the UCS icon changes to indicate the origin and orien­tation of the new UCS.

To define a UCS by specifying a new origin and points on the positive x- and y-axes    

CADdirect">   1   Do one of the following to choose User Coordinate Systems ():

   On the ribbon, choose Draw > User Coordinate Systems or choose
View > User Coordinate Systems.

   On the menu, choose Tools > User Coordinate Systems > Select a Predefined UCS.

   On the UCS toolbar, click the Select a Predefined UCS tool.

   Type setucs and then press Enter.

   2   In the User Coordinate Systems dialog box, click Explore UCSs.

   3   In the Explorer, be sure that Coordinate Systems is selected, and click the New Item tool ().    

   4   In the prompt box, choose 3 Point.

   5   Select the new origin.

   6   Select a point on the positive x-axis.

   7   Select a point in the positive y direction.

   8   In the Explorer - Coordinate Systems element, type the name for the new UCS, and then close the dialog box.

 

Define the new UCS by selecting the origin (A), a point on the positive x-axis (B), and a point in the positive y direction (C).

Defining_a_user_coordinate_system
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