TIN Polygon Tag (3D Analyst)
Summary
Creates polygon features using tag values in a triangulated irregular network (TIN) dataset.
Illustration
Usage
Tag values can be assigned using an integer field in a polygon feature class by loading the polygon into the TIN as a valuefill surface type. For more information on surface types, please read Fundamentals of editing TIN surfaces.
Triangles that do not have a tag explicitly defined are assigned the default value of 0.
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All contiguous triangles with an identical tag value will be stored in a single polygon feature.
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The tag value will be denoted as an attribute in the output feature class.
Syntax
Parameter | Explanation | Data Type |
in_tin |
The input TIN. | TIN Layer |
out_feature_class |
The output feature class. | Feature Class |
tag_field (Optional) |
The name of the field storing the tag attribute in the output feature class. The default field name is Tag_Value. | String |
Code Sample
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.TinPolygonTag_3d("tin", "tin_polytag.shp", "Tag_Value")
The following sample demonstrates the use of this tool in a stand-alone Python script:
'''**************************************************************************** Name: TinPolygonTag Example Description: This script demonstrates use of the TinPolygonTag tool to extract tag information from each TIN in the target workspace. ****************************************************************************''' # Import system modules import arcpy from arcpy import env import exceptions, sys, traceback try: arcpy.CheckOutExtension("3D") # Set environment settings env.workspace = "C:/data" # Set Local Variables TagField = "Code" # Create list of TINs TINList = arcpy.ListDatasets("*", "Tin") # Verify the presence of TINs in the list if TINList: # Iterate through the list of TINs for dataset in TINList: # Define the name of the output file Output = dataset + "_domain.shp" # Execute TinPolygonTag arcpy.TinPolygonTag_3d(dataset, Output, TagFieldField) print "Finished." else: print "No TIN files reside in {0}".format(env.workspace) 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)