TIN 线 (3D Analyst)

摘要

将隔断线从不规则三角网 (TIN) 数据集导出到 3D 线要素类。

插图

用法

• 输出线将标识每种隔断线类型的整数值作为属性。这些编码存储在名称由编码字段参数定义的字段中，值含义定义如下：

  • 1 - 软隔断线，表示坡度的平缓变化。
  • 2 - 硬隔断线，表示坡度的突然变化。

• TIN 必须具有隔断线才能让此工具生成线要素。如果无论是否具有隔断线都需要三角形边，考虑使用 TIN 边工具。

语法

TinLine_3d (in_tin, out_feature_class, {code_field})

参数	说明	数据类型
in_tin	输入 TIN。	TIN Layer
out_feature_class	输出要素类。	Feature Class
code_field (可选)	输出要素类中定义隔断线类型的字段名称。默认字段名称为 Code。	String

代码实例

Tin 线 (TinLine) 示例 1（Python 窗口）

下面的示例演示了如何在 Python 窗口中使用此工具：

import arcpy
from arcpy import env

arcpy.CheckOutExtension('3D')
env.workspace = 'C:/data'
arcpy.TinLine_3d('tin', 'tin_line.shp')

Tin 线 (TinLine) 示例 2（独立脚本）

下面的示例演示了如何在独立 Python 脚本中使用此工具：

"""****************************************************************************
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")

环境

当前工作空间, 临时工作空间, 范围, 输出坐标系, 地理变换, XY 分辨率, XY 容差, Z 分辨率, Z 容差, 输出 Z 属性域, 输出 XY 属性域, 自动提交, 输出空间格网 1；输出空间格网 2；输出空间格网 3, 输出配置关键字

许可信息

ArcGIS for Desktop Basic: 需要 3D Analyst

ArcGIS for Desktop Standard: 需要 3D Analyst

ArcGIS for Desktop Advanced: 需要 3D Analyst