Named UCSs Tab (UCS Dialog Box)

Lists user coordinate systems and sets the current UCS.

Current UCS

Displays the name of the current UCS. If the UCS has not been saved and named, it is listed as UNNAMED.

UCS Names List

Lists the coordinate systems defined in the current drawing. If there are multiple viewports and multiple unnamed UCS settings, the list includes only the unnamed UCS of the current viewport. Unnamed UCS definitions that are locked to other viewports (UCSVP system variable = 1) are not listed in the current viewport. A pointer indicates the current UCS.

UNNAMED is always the first entry if the current UCS is unnamed. World is always listed and cannot be renamed or deleted. If you define other coordinate systems for the active viewport during the current editing session, a Previous entry is next. You can step back through these coordinate systems by selecting Previous and Set Current repeatedly.

To add a UCS name to this list, use the Save option of the UCS command.

Set Current

Restores the selected coordinate system. You can also restore a selected coordinate system by double-clicking its name in the list, or by right-clicking the name and choosing Set Current.

Details

Displays the UCS Details dialog box, which displays UCS coordinate data. You can also view the details about a selected coordinate system by right-clicking the name and choosing Details.

Rename (Shortcut Menu Only)

Renames a customized UCS. You cannot rename the World UCS.

Delete (Shortcut Menu Only)

Deletes a customized UCS. You cannot delete the World UCS.

Orthographic UCSs Tab (UCS Dialog Box)

Changes the UCS to one of the orthographic UCS settings.

Current UCS

Displays the name of the current UCS. If the UCS has not been saved and named, it is listed as UNNAMED.

Orthographic UCS Names

Lists the six orthographic coordinate systems defined in the current drawing. The orthographic coordinate systems are defined relative to the UCS specified in the Relative To list.

• Name. Specifies the name of the orthographic coordinate system.
• Depth. Specifies the distance between the XY plane of the orthographic UCS and a parallel plane that passes through the origin of the coordinate system specified by the UCSBASE system variable. The parallel plane of the UCSBASE coordinate system can be an XY, YZ, or XZ plane.
  NoteYou can specify the depth or a new origin for the selected orthographic UCS. See Depth option.

Set Current

Restores the selected coordinate system.

Details

Displays the UCS Details dialog box, which displays UCS coordinate data. You can also view the details about a selected coordinate system by right-clicking the name and choosing Details.

Relative To

Specifies the base coordinate system for defining the orthographic UCSs. By default, WCS is the base coordinate system.

Whenever you change the Relative To setting, the origin of the selected orthographic UCS is restored to its default position.

If you save an orthographic coordinate system in a drawing as part of a viewport configuration, or if you select a setting in Relative To other than World, the orthographic coordinate system name changes to UNNAMED to distinguish it from the predefined orthographic coordinate system.

Reset (Shortcut Menu Only)

Restores the origin of the selected orthographic coordinate system. The origin is restored to its default location (0,0,0) relative to the specified base coordinate system.

Depth (Shortcut Menu or Double-Click)

Specifies the distance between the XY plane of the orthographic UCS and a parallel plane that passes through the origin of the coordinate system. In the Orthographic UCS Depth dialog box, enter a value or choose the Select New Origin button to use the pointing device to specify a new depth or a new origin.

Settings Tab (UCS Dialog Box)

Displays and modifies UCS icon settings and UCS settings saved with a viewport.