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Modifying an existing UCS

An existing user co-ordinate system may be edited and thus its origin or direction of axes or both may be altered. In general, there are two ways to modify an existing UCS:

• type values of UCS parameters into the editing dialogue of the UCS,

• apply one of many modifying functions collected in submenu UCS (opened either from menu Tools > UCS, or under button [Setting of UCS for active view] () on toolbar View) (see chapter Adjusting a user co-ordinate system).

The procedure for direct editing of UCS parameters

1. Open the UCS manager.

2. Select the UCS you want to modify.

3. Click button [Edit] to adjust parameters of the new UCS.

4. Type in the required values for the origin of the UCS and for direction of its axes.

5. Close the editing dialogue.

6. Close the UCS manager.

The procedure for the modification of a UCS by means of UCS submenu functions

1. If it is not the case that the UCS you want to modify is the current (active) one, make it current first.

2. Open submenu UCS (either in menu Tools > UCS, or under button [Setting of UCS for active view] () on toolbar View).

3. Select the required way of modification.

4. If necessary, input required parameters (i.e. required point or points).

5. The UCS has been modified and is now kept as the current UCS.

6. Open submenu UCS (either in menu Tools > UCS, or under button [Setting of UCS for active view] () on toolbar View).

7. Select function Store the current UCS ().

8. Select the name of the UCS that has been modified and rewrite it with the new adjustment.

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