摘要
向 terrain 数据集中添加一个或多个要素类。
用法
输入要素必须与 terrain 数据集位于同一个要素数据集中。
Terrain 数据集必须已定义一个或多个金字塔等级。
根据与添加到 terrain 中的要素相关的表面类型，可能需要使用构建 Terrain 重新构建 terrain 数据集。ArcCatalog 中 terrain 数据集的属性对话框和 ArcMap 中 terrain 图层的属性对话框都会指明是否需要重新构建数据集。
仅当要素包含简化几何且在视觉上与预计的显示比例相关时，才考虑为隔断线和多边形表面要素类型启用概貌选项。例如，对于概貌显示情况，隔断线可能不会充分显示，而裁剪多边形则将会显示。如果边界要素很详细，则考虑将其概化，并在概貌中使用较粗略的表示形式。详细版本应在显示比例更适用于其详细程度的分辨率时使用。
对于存储在 SDE 中的 terrain 数据集：
- 目标 terrain 无法注册为版本。
- 输入要素类无法注册为版本。
语法
AddFeatureClassToTerrain_3d (in_terrain, in_features)
| 参数 | 说明 | 数据类型 |
in_terrain | 要向其中添加要素类的 terrain。terrain 数据集必须已创建一个或多个金字塔等级。 | Terrain Layer |
in_features [[in_features, height_field, SF_type, group, min_resolution, max_resolution, overview, embed, embed_name, embed_fields, anchor],...] | 识别要向 terrain 中添加的要素。每个要素必须与 terrain 位于同一要素数据集中，并且必须已通过下列属性定义其角色：
| Value Table |
代码示例
AddFeatureClassToTerrain 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"
params = "terrain.gdb/terrainFDS/points2 SHAPE masspoints 2 0 10 true false "\
"points_embed <None> false"
arcpy.AddFeatureClassToTerrain_3d("test.gdb/featuredataset/terrain", params)
AddFeatureClassToTerrain 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
许可信息
- ArcGIS Desktop Basic: 需要 3D Analyst
- ArcGIS Desktop Standard: 需要 3D Analyst
- ArcGIS Desktop Advanced: 需要 3D Analyst