The interactive TIN Editing toolbar

The TIN Editing toolbar contains a collection of tools for editing TIN surfaces. The interactive TIN Editing toolbar is designed to work in ArcMap only. The TIN editing tools allow you to directly add, remove, or modify TIN nodes, breaklines, or polygons. These tools provide real-time surface feedback, which permits you to save your edits directly back to that TIN or create a copy of the edited TIN.

For more information on TIN surfaces see: What is a TIN surface?.

For more information on editing capabilities for TIN surfaces see: Fundamentals of editing TIN surfaces.

Interactive TIN Editing toolbar drop-down menu

TIN Editing toolbar drop-down menu options

Start Editing TIN	Allows you to start a TIN edit session. The TIN that is to be edited must be the selected layer in the Choose Surface Layer drop-down menu on the 3D Analyst toolbar. The TIN Editing interactive tools will not be available until an edit session has been started.
Stop Editing TIN	Allows you to stop a TIN edit session.
Save	Saves surface changes as you edit.
Save As	Saves a copy of the TIN surface with the most current edits.
Undo Since Last Save	Removes the last edit commands since the TIN was last saved.
Set to Constrained Delaunay	A constrained Delaunay triangulation method follows Delaunay rules everywhere except along breaklines. Use this parameter to set a TIN to a constrained Delaunay triangulation method. When you set a TIN to a constrained Delaunay triangulation method, and then you save the TIN, you cannot set the triangulation back to a conforming Delaunay triangulation method. The TIN has been changed to adhere to a constrained Delaunay triangulation permanently. If you have not saved the TIN as a constrained Delaunay triangulation, then use the Undo Since Last Save to set the TIN back to a conforming Delaunay triangulation method. Any edits that you have completed on the TIN will be lost. When a constrained Delaunay TIN is in a TIN edit session the Set to Constrained Delaunay will be disabled because the TIN is already using a constrained Delaunay triangulation method.

Interactive TIN Editing toolbar tools

Interactive TIN Editing tools

Add TIN Point	Adds a new node to a TIN.
Add TIN Line	Adds a new breakline to a TIN.
Add TIN Polygon	Adds a new polygon to a TIN.
Set TIN Edge Type	Changes the selected edge type.
Set TIN Tags	Changes the tag values for nodes or triangles.
Modify TIN Data Area	Turns triangles of a TIN on or off.
Delete TIN Breakline	Deletes a breakline from a TIN.
Move TIN Nodes	Moves TIN node locations within a TIN.
Connect TIN Nodes	Establishes a breakline between two nodes.
Swap Edge	Connects to opposing nodes to form an alternative pair of triangles.
Delete TIN Node	Deletes a node from a TIN.
Delete TIN Nodes By Area	Deletes a set of TIN nodes based on a digitized area.
Adjust Node Z	Modifies the z-value of a node.