Add or remove TIN nodes interactively

Available with 3D Analyst license.

You can add or remove TIN nodes interactively using the TIN Editor. Nodes are points that represent locations of elevation data. The Add Node tool allows you to add individual nodes to a TIN. The Delete Node tool allows you to select nodes and delete them from the TIN surface.

When you are adding or removing nodes on a TIN, it is recommended that you have the nodes drawn. To draw the nodes for the TIN, open the Symbology pane for the selected TIN. Select the TIN from the Contents pane and click the TIN Layer tab set. Then click the symbology button to open the Symbology pane. Symbolize the TIN layer using points and set the Draw using drop-down menu to Simple.

There are two options to obtain elevation values for nodes added to a TIN. The From surface option will interpolate the elevation for the node from the selected location on the surface. The elevation will be displayed in the Add TIN Node window. The As specified option will add the node at the elevation entered in the Add TIN Node dialog box.

Add nodes

Use the following steps to add nodes to a TIN.

1. In the Contents pane, select the TIN layer you want to edit.
2. Click the Data tab from the TIN Layer tab set.
3. Click the TIN Editor button .
4. Click the Add Node button .

   The Add TIN Node dialog box appears.

5. From the Add TIN Node dialog box, set the Height value to either From surface or As specified.
   When the From surface option is selected, the elevation of the digitized TIN node is interpolated from the selected location on the surface. When the As specified option is selected, the digitized TIN node is specified in the Add TIN Node dialog box.

   

6. Enter the new elevation points onto the TIN surface by clicking the locations you want.
7. Click the Save button to save the edits to the current TIN being edited or click the Discard button to discard all unsaved edits. To create a copy of the TIN with the current edits applied, click the Save As New TIN button .

   Once the TIN has been saved, all edits become permanent and cannot be undone.

8. Click the Close TIN Editor button to close the TIN Editor when edits are completed.

Delete nodes

Use the following steps to delete nodes from a TIN.

1. In the Contents pane, select the TIN layer you want to edit.
2. Click the Data tab from the TIN Layer tab set.
3. Click the TIN Editor button .
4. Click the Delete Node button .
5. Click the individual nodes to delete on the TIN surface.
6. Click the Save button to save the edits to the current TIN being edited or click the Discard button to discard all unsaved edits. To create a copy of the TIN with the current edits applied, click the Save As New TIN button .

   Once the TIN has been saved, all edits become permanent and cannot be undone.

7. Click the Close TIN Editor button to close the TIN Editor when edits are completed.