BuildTIN

Builds a Triangulated Irregular Network from a feature layer

Inputs:

Outputs:

New polygon Z feature class. All the polygons are triangles that comply with the Delaunay criteria. See TIN notes for more information about Triangulated Irregular Network

Notes :

The process goes through several steps
- Collecting the elevation points from the source layer. If the source is a polygon or polyline layer, all the vertices are used.
- Removing duplicate points
- Creating the TIN structure
- Storing the polygons Z
To achieve best results when creating TIN from a polyline layer use Generalize Polylines function or Densify Polylines function in order to remove unnecessary points or add points to the long straight segments
The function should work with no problems on datasets with up to 2 million points.
For advanced TIN and Raster surfaces creation, check ET Surface at http://www.ian-ko.com

Example:

Source Layer (polyline)	Result TIN

Command line syntax

ET_GPBuildTIN <input_dataset> <out_feature class> <elevation_field>

Parameters

Expression	Explanation
<input_dataset>	A Point, Polyline or Polygon feature class or feature layer
<out_feature class>	A String - the full name of the output feature class (A feature class with the same full name should not exist)
<elevation_field>	A String representing the field name (must be a numeric field) that will be used as a source for the elevation values

Scripting syntax

ET_GPBuildTIN (input_dataset, out_feature class, elevation_field)

See the explanations above:
<> - required parameter
{} - optional parameter