UCS command

Creates and displays user-defined coordinate systems (UCS) through the Command line.

Icon:

Method

Specify a new UCS origin through one, two or three points in the drawing or choose one of the command’s options.

Face

Aligns the UCS to a face of a 3D solid.

Note: This option works only with flat 3D faces and not curved ones, such as on a sphere.

NAmed

Creates, restores and deletes UCS names.

?

Lists the names of UCSs in the drawing.

Note: Type:

Entity

Aligns the UCS to a selected entity.

Select entity for UCS definition: Select an entity to align the orientation and location of the UCS or select a point cloud to set the UCS to match the point cloud normals.; Note: The UCS origin is located in the point picked when selecting the point cloud or at the end point, center point, or vertex closest to the pick point for other entities. The X-axis is aligned with the entity or an edge. The XY-plane is aligned to the entity's plane. For ambiguous objects with obvious orientation, like a circle, the orientation is maintained.

View: Sets the UCS to the current viewpoint.; Note: The x axis and y axis are parallel to the view edges. The z axis is perpendicular to the view, with positive Z-axis pointing to the viewer. The origin is copied from the previous coordinate system.

Z Axis: Sets the UCS relative to the Z-axis.; Note: XY-plane is perpendicular to the Z-axis with the X-axis horizontal and the Y-axis pointing upwards.

Move: Moves the origin of the current UCS, keeping the orientation of the axes.