An overview of the TIN Management toolset

You can create TIN surfaces from vector data containing elevation information using the ArcGIS 3D Analyst TIN Management tools. You can create an empty TIN with a spatial reference and add features to it when they become available. You can also add features to existing TINs to enforce real-world structures in the TIN surface model.

A TIN can be constructed by triangulating a set of vertices. The vertices are connected with a series of edges to form a network of triangles.

The resulting triangulation satisfies the Delaunay triangle criterion, which ensures that no vertex lies within the interior of any of the circumcircles of the triangles in the network. If the Delaunay criterion is satisfied everywhere on the TIN, the minimum interior angle of all the triangles is maximized. The result is that long, thin triangles are avoided as much as possible.

The edges of TINs form contiguous, nonoverlapping triangular facets that can be used to capture the position of linear features that play an important role in a surface, such as ridgelines or stream courses.

Learn more about the components of a TIN

Learn more about creating TIN surfaces

Learn more about editing TINs

The following is a list of the tools in the TIN Management toolset and a brief description of each.



Copy TIN

Creates a copy of a triangulated irregular network (TIN) dataset.

Create TIN

Creates a TIN dataset.

Delineate TIN Data Area

Redefines the data area, or interpolation zone, of a triangulated irregular network (TIN) based on its triangle edge length.

Edit TIN

Adds features from one or more input feature classes that define the surface area of a triangulated irregular network (TIN).

TIN Management toolset overview