Línea TIN (3D Analyst)
Resumen
Exporta líneas de corte desde un dataset de red irregular de triángulos (TIN) a una clase de entidad de línea 3D.
Ilustración
Uso
Las líneas de salida se atribuyen con valores enteros que identifican cada tipo de línea de corte. Estos códigos se almacenan en un campo cuyo nombre lo define el parámetro Campo de código, y el significado de los valores se define a continuación:
- 1—Línea de corte fina, que representa los cambios graduales en la pendiente.
- 2—Línea de corte gruesa, que representa los cambios abruptos en la pendiente.
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El TIN debe tener algunas líneas de corte para que esta herramienta produzca entidades de línea. Si se desean los bordes del triángulo sin importar las líneas de corte, considere el uso de la herramienta Borde de TIN.
Sintaxis
Parámetro | Explicación | Tipo de datos |
in_tin |
The input TIN. | TIN Layer |
out_feature_class |
The output feature class. | Feature Class |
code_field (Opcional) |
El nombre del campo en la clase de entidad de salida que define el tipo de línea de corte. El nombre de campo predeterminado es Código. | String |
Ejemplo de código
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.TinLine_3d('tin', 'tin_line.shp')
The following sample demonstrates the use of this tool in a stand-alone Python script:
"""**************************************************************************** Name: Create Terrain from TIN Description: This script demonstrates how to create a terrain dataset using features extracted from a TIN. It is particularly useful in situations where the source data used in the TIN is not available, and the amount of data stored in the TIN proves to be too large for the TIN. The terrain's scalability will allow improved display performance and faster analysis. The script is designed to work as a script tool with 5 input arguments. ****************************************************************************""" # Import system modules import arcpy import exceptions, sys, traceback from arcpy import env # Set local variables tin = arcpy.GetParameterAsText(0) # TIN used to create terrain gdbLocation = arcpy.GetParameterAsText(1) # Folder that will store terran GDB gdbName = arcpy.GetParameterAsText(2) # Name of terrain GDB fdName = arcpy.GetParameterAsText(3) # Name of feature dataset terrainName = arcpy.GetParameterAsText(4) # Name of terrain try: arcpy.CheckOutExtension("3D") # Create the file gdb that will store the feature dataset arcpy.management.CreateFileGDB(gdbLocation, gdbName) gdb = '{0}/{1}'.format(gdbLocation, gdbName) # Obtain spatial reference from TIN SR = arcpy.Describe(tin).spatialReference # Create the feature dataset that will store the terrain arcpy.management.CreateFeatureDataset(gdb, fdName, SR) fd = '{0}/{1}'.format(gdb, fdName) # Export TIN elements to feature classes for terrain arcpy.AddMessage("Exporting TIN footprint to define terrain boundary...") boundary = "{0}/boundary".format(fd) # Execute TinDomain arcpy.ddd.TinDomain(tin, tinDomain, 'POLYGON') arcpy.AddMessage("Exporting TIN breaklines...") breaklines = "{0}/breaklines".format(fd) # Execute TinLine arcpy.ddd.TinLine(tin, breaklines, "Code") arcpy.AddMessage("Exporting TIN nodes...") masspoints = "{0}/masspoints".format(fd) # Execute TinNode arcpy.ddd.TinNode(sourceTIN, TIN_nodes) arcpy.AddMessage("Creating terrain dataset...") terrain = "terrain_from_tin" # Execute CreateTerrain arcpy.ddd.CreateTerrain(fd, terrainName, 10, 50000, "", "WINDOWSIZE", "ZMEAN", "NONE", 1) arcpy.AddMessage("Adding terrain pyramid levels...") terrain = "{0}/{1}".format(fd, terrainName) pyramids = ["20 5000", "25 10000", "35 25000", "50 50000"] # Execute AddTerrainPyramidLevel arcpy.ddd.AddTerrainPyramidLevel(terrain, "", pyramids) arcpy.AddMessage("Adding features to terrain...") inFeatures = "{0} Shape softclip 1 0 10 true false boundary_embed <None> "\ "false; {1} Shape masspoints 1 0 50 true false points_embed "\ "<None> false; {2} Shape softline 1 0 25 false false lines_embed "\ "<None> false".format(boundary, masspoints, breaklines) # Execute AddFeatureClassToTerrain arcpy.ddd.AddFeatureClassToTerrain(terrain, inFeatures) arcpy.AddMessage("Building terrain...") # Execute BuildTerrain arcpy.ddd.BuildTerrain(terrain, "NO_UPDATE_EXTENT") arcpy.GetMessages() 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) finally: arcpy.CheckInExtension("3D")