Edit TIN (3D Analyst)

ArcGIS Pro 3.2 | | Help archive

Summary

Loads data from one or more input features to modify the surface of an existing triangulated irregular network (TIN).

Learn more about how Edit TIN works

Illustration

Add breaklines to TIN

Usage

  • This tool modifies the input TIN. Consider using the Copy TIN tool to maintain a backup if you wish to retain an unmodified version of the source TIN.

  • The surface feature type defines how the input features will contribute to the definition of the triangulated surface.

    • Point features can be specified as mass points, which provide data nodes with z-values that are used in the triangulation of the surface.
    • Line features can be specified as mass points and breaklines, which represent locations along a surface with linear discontinuities in slope, such as ridge lines, shore lines, pavement edges, building footprints, and so on.
    • Polygon features can also be specified as mass points and breaklines, along with clip features that define the data area, replace features that define regions with constant z-values (for example, water bodies), and erase features that indicate interior areas where data does not exist.
  • The tool can create a TIN composed of many millions of points given enough memory. However, limiting the number of TIN nodes to less than 6 million will ensure a responsive display performance and overall usability. Larger TIN surfaces are best managed using a multiresolution terrain dataset. When working with point cloud data in the LAS format, the LAS dataset can be used to efficiently render and process LAS points in a TIN surface that incorporates the same polyline and polygon based surface constraints supported in a TIN dataset.

Parameters

LabelExplanationData Type
Input TIN

The TIN dataset that will be processed.

TIN Layer
Input Feature Class

The input features and their related properties that will contribute to the definition of the TIN.

  • Input Features—The feature with the geometry that will be imported to the TIN.
  • Height Field— The source of elevation for the input features. Any numeric field from the input feature's attribute table can be used, along with the Z or M values stored in the Shape field. Choosing the <None> keyword will result in the feature's elevation being interpolated from the surrounding surface.
  • Tag Field—A numeric attribute will be assigned to the TIN's data elements using values obtained from an integer field in the input feature's attribute table.
  • Type—The feature's role in shaping the TIN surface will be defined. See the tool's usage tips for more information about surface feature types.
  • Use Z— Indicates whether Z or M values are used when the SHAPE field is indicated as the height source. Setting this option to True implies Z values will be used, whereas setting it to False results in M values being used.
Value Table
Constrained Delaunay
(Optional)

Specifies the triangulation technique that will be used along the breaklines of the TIN.

  • Unchecked—The TIN will use Delaunay conforming triangulation, which may densify each segment of the breaklines to produce multiple triangle edges. This is the default.
  • Checked—The TIN will use constrained Delaunay triangulation, which will add each segment as a single edge. Delaunay triangulation rules are honored everywhere except along breaklines, which will not be densified.
Boolean

Derived Output

LabelExplanationData Type
Updated TIN

The updated TIN.

TIN Layer

Licensing information

  • Basic: Requires 3D Analyst
  • Standard: Requires 3D Analyst
  • Advanced: Requires 3D Analyst

Related topics