Option
Description
Switches to the WCS (world coordinate system).
Specifies a UCS through points picked in the drawing.
Pick a point, or enter x,y,z coordinates; prompts you:
Point on X-axis/<Accept> - enter an option.
Point on the XY-plane with positive Y value/<Accept> - enter an option.
Point on X-axis
Specifies the orientation of the X axis.
Pick a point, or enter x,y,z coordinates.
Point on the XY-plane with positive Y value
Specifies the orientation of the XY plane.
Pick a point, or enter x,y,z coordinates.
Accept
Uses the current x axis or y value.
Creates, restores, and deletes named UCSs; prompts you:
Enter an option Restore/Save/Delete/? - enter an option.
Restore
Restores a named UCS; prompts you:
UCS name to restore - enter the name of a UCS.
As a shortcut, you can enter R directly at the 'Specify origin of UCS...' prompt.
Save
Saves the current UCS by a name; prompts you:
Enter name for saving UCS, or ? for list - specifies the name to give the UCS.
As a shortcut, you can enter S directly at the 'Specify origin of UCS...' prompt.
Delete
Erases a named UCS from the drawing; prompts you:
UCS name(s) to delete, or ? for list - enter one or more UCS names.
Separate multiple names with commas.
As a shortcut, you can enter D directly at the 'Specify origin of UCS...' prompt.
?
Lists the names of UCSs in the drawing; prompts you:
Name(s) of UCS to list <* for all> - specify the names to list:
* - lists all UCS names.
name* - lists names of UCSs that begin with name.
name - lists the UCS specified by name.
This command does not list unnamed or temporary UCSs.
A typical display looks like this:
Current UCS name: UCS-PLAN
Name of UCS: UCS-1
Origin of UCS: X= 0.0000 Y= 0.0000 Z= 0.0000
X axis: X= 1.0000 Y= 0.0000 Z= 0.0000
Y axis: X= 0.0000 Y= 1.0000 Z= 0.0000
Z axis: X= 0.0000 Y= 0.0000 Z= 1.0000
Name of UCS: UCS-PLAN
Origin of UCS: X= 0.0000 Y= 0.0000 Z= 0.0000
X axis: X= 1.0000 Y= 0.0000 Z= 0.0000
Y axis: X= 0.0000 Y= 1.0000 Z= 0.0000
Z axis: X= 0.0000 Y= 0.0000 Z= 1.0000
If necessary, press F2 to view the history prompt window.
As a shortcut, you can enter ? directly at the 'Specify origin of UCS...' prompt.
Aligns the UCS to a selected entity; prompts you:
Select entity for UCS definition - choose a single entity.
The orientation and type of entity define the orientation of the UCS.
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UCS origin - located to the end point, center point, or vertex closes to the pick point.
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X axis - aligned with the entity r an edge.
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XY plane - aligned to the entity's plane.
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Orientation - maintained for ambiguous objects.
Changes the UCS to the previous one.
Sets the UCS to the current viewpoint.
The x axis and y axis are parallel to the view edges and the z axis is perpendicular to the view, positive Z-axis pointing to the viewer. The origin is copied from the previous coordinate system.
Rotates the current UCS about the x axis; prompts you:
Enter angle of rotation about X axis - specify an angle or pick two points.
Rotates the current UCS about the y axis; prompts you:
Enter angle of rotation about Y axis - specify an angle or pick two points.
Rotates the current UCS about the z axis; prompts you:
Enter angle of rotation about Z axis - specify an angle or pick two points.
Sets the UCS relative to the z axis; prompts you:
Origin point - pick a point, or enter x,y,z coordinates.
Point on positive Z-axis - pick another point, or enter x,y,z coordinates.
The second point defines the positive Z-axis. The XY-plane is perpendicular to the Z-axis with the X-axis horizontal and the Y-axis pointing upwards.