Summary
Creates a line or polygon feature class representing the interpolation zone of a triangulated irregular network (TIN) dataset.
Illustration
Usage
This tool can be used to generate a convex hull (the minimum bounding polygon) around a set of points. If there aren't any clip or erase polygons used to define the TIN, the domain is equivalent to the convex hull.
The output geometry is placed in one feature record and may be either a single or multipart geometry, depending on the nature of the interpolation zone. For example, if the interpolation zone is composed of islands or contains holes, the resulting geometry will be multipart.
Syntax
TinDomain(in_tin, out_feature_class, out_geometry_type)
Parameter | Explanation | Data Type |
in_tin | The TIN dataset to process. | TIN Layer |
out_feature_class | The feature class that will be produced by this tool. | Feature Class |
out_geometry_type | The geometry of the output feature class.
| String |
Code sample
TinDomain example 1 (Python window)
The following sample demonstrates the use of this tool in the Python window.
import arcpy
from arcpy import env
arcpy.CheckOutExtension('3D')
env.workspace = 'C:/data'
arcpy.TinDomain_3d('tin', 'tin_domain.shp')
TinDomain example 2 (stand-alone script)
The following sample demonstrates the use of this tool in a stand-alone Python script.
'''****************************************************************************
Name: Define Data Boundary of LAS File
Description: This script demonstrates how to delineate data boundaries of
LAS files with irregularly clustered points. It is intended for
use as a script tool with one input LAS file.
****************************************************************************'''
# Import system modules
import arcpy
import exceptions, sys, traceback
# Set local variables
inLas = arcpy.GetParameterAsText(0) #input LAS file
ptSpacing = arcpy.GetParameterAsText(1) # LAS point spacing
classCode = arcpy.GetParameterAsText(2) # List of integers
returnValue = arcpy.GetParameterAsText(3) # List of strings
outTin = arcpy.GetParameterAsText(4) # TIN created to delineate data area
outBoundary = arcpy.GetParameterAsText(5) # Polygon boundary file
try:
arcpy.CheckOutExtension("3D")
# Execute LASToMultipoint
arcpy.AddMessage("Creating multipoint features from LAS...")
lasMP = arcpy.CreateUniqueName('lasMultipoint', 'in_memory')
arcpy.ddd.LASToMultipoint(inLas, LasMP, ptSpacing, class_code,
"ANY_RETURNS", "", sr, inFormat, zfactor)
# Execute CreateTin
arcpy.AddMessage("Creating TIN dataset...")
arcpy.ddd.CreateTin(outTin, sr, "{0} Shape.Z masspoints"\
.format(lasMP), "Delaunay")
# Execute CopyTin
arcpy.AddMessage("Copying TIN to delineate data boundary...")
arcpy.ddd.CopyTin(outTin, "{0}_copy".format(outTin))
# Execute DelineateTinDataArea
arcpy.AddMessage("Delineating TIN boundary...")
maxEdge = ptSpacing * 4
arcpy.ddd.DelineateTinDataArea(outTin, maxEdge, "PERIMETER_ONLY")
# Execute TinDomain
arcpy.AddMessage("Exporting data area to polygon boundary...")
arcpy.ddd.TinDomain(outTin, outBoundary, "POLYGON")
arcpy.AddMessage("Finished")
arcpy.CheckInExtension("3D")
except arcpy.ExecuteError:
print arcpy.GetMessages()
except:
# Get the traceback object
tb = sys.exc_info()[2]
tbinfo = traceback.format_tb(tb)[0]
# Concatenate error information into message string
pymsg = 'PYTHON ERRORS:\nTraceback info:\n{0}\nError Info:\n{1}'\
.format(tbinfo, str(sys.exc_info()[1]))
msgs = 'ArcPy ERRORS:\n {0}\n'.format(arcpy.GetMessages(2))
# Return python error messages for script tool or Python Window
arcpy.AddError(pymsg)
arcpy.AddError(msgs)
Environments
Licensing information
- Basic: Requires 3D Analyst
- Standard: Requires 3D Analyst
- Advanced: Requires 3D Analyst