Enabling use of the current z-value

The Update Z values on modify check box controls whether a vertex's z-value is updated to the current z-value when the vertex is modified. When this check box is checked, z-values on any modified vertices are updated to the current z-value at the time the edits are made. In contrast, if the Update Z values on modify check box is unchecked, existing z-values are retained, and the current z-value is ignored when a vertex is modified.

In the example below, if the Update Z values on modify check box is checked and you move vertex 1, the z-value will update from 27.275 to 20.

Example of a feature updated using the current z-value

If that same edit is performed when the Update Z values on modify check box is not checked, the z-value for vertex 1 remains unchanged at 27.275.

Example of a vertex that retains the original z-value when moved

By default, the Update Z values on modify check box is checked.

步骤:

1. Start ArcMap.
   提示:

   If the ArcMap - Getting Started dialog box appears, you can open a new or existing map document. You can also check the Do not show this dialog box in the future check box and click Open.

2. On the main menu, click Customize > Production > Production Properties.

   The Production Properties dialog box appears.

3. Click Editing.

   The Editing properties appear.
4. Check the Update Z values on modify check box in the Z Management area.
5. Click OK.