2011

Table Of Contents
Align the new UCS with an existing object. The origin of the UCS is located
at the vertex nearest to where the object was selected.
Align the new UCS with the current viewing direction.
Rotate the current UCS around any of its three major axes.
Reorient the XY plane by specifying a new Z axis.
Use UCS Presets
If you do not want to define your own UCS, you can choose from several
preset coordinate systems. The images on the Orthographic UCSs tab of the
(Named) UCS dialog box show the available choices.
Change the Default Elevation
The ELEV command sets the default Z value for new objects above or below
the XY plane of the current UCS. This value is stored in the ELEVATION system
variable.
NOTE Generally, it is recommended that you leave the elevation set to zero and
control the XY plane of the current UCS with the UCS command.
Change the UCS in Paper Space
You can define a new UCS in paper space just as you can in model space;
however, the UCS in paper space is restricted to 2D manipulation. Although
you can enter 3D coordinates in paper space, you cannot use 3D viewing
commands such as PLAN and VPOINT.
Save and Restore UCS Locations by Name
If you plan to work extensively in 3D, you can save named UCS locations,
each having a different origin and orientation, for various construction
requirements. You can relocate, save, and recall as many UCS orientations as
you require.
To define a new UCS origin in 3D
1 Click View tab Coordinates panel Origin.
2 Specify a point for the new origin.
The UCS origin (0,0,0) is redefined at the point you specify.
Specify Workplanes in 3D (UCS) | 569