摘要
在指定工作空间中创建属性域。
用法
语法
CreateDomain_management (in_workspace, domain_name, {domain_description}, {field_type}, {domain_type}, {split_policy}, {merge_policy})
参数 | 说明 | 数据类型 |
in_workspace | 将包含新属性域的地理数据库。 | Workspace |
domain_name | 要创建的属性域的名称。 | String |
domain_description (可选) | 要创建的属性域的描述。 | String |
field_type (可选) | 要创建的属性域的类型。属性域是描述字段类型合法值的规则。指定的字段类型应与将属性域指定到的字段的数据类型相匹配。
| String |
domain_type (可选) | 要创建的属性域类型:
| String |
split_policy (可选) | 所创建属性域的分割策略。分割要素时,属性值的行为受控于它的分割策略。
| String |
merge_policy (可选) | 所创建属性域的合并策略。在将两个要素合并为一个要素时,合并策略控制着新要素的属性值。
| String |
代码示例
创建属性域示例(Python 窗口)
以下 Python 窗口脚本演示了如何在即时模式下使用 CreateDomain 函数。
import arcpy
arcpy.env.workspace = "C:/data"
arcpy.CreateDomain_management("montgomery.gdb", "Materials", "Valid pipe materials", "TEXT", "CODED")
创建属性域示例 2(独立脚本)
此独立脚本将 CreateDomain 函数用作工作流的一部分,以创建属性域、为其赋值并将属性域分配给要素类的字段。
# Name: MakeDomain.py
# Description: Create an attribute domain to constrain pipe material values
#Import system modules
import arcpy
try:
# Set the workspace (to avoid having to type in the full path to the data every time)
arcpy.env.workspace = "C:/data"
# Set local parameters
domName = "Material4"
gdb = "montgomery.gdb"
inFeatures = "Montgomery.gdb/Water/Distribmains"
inField = "Material"
# Process: Create the coded value domain
arcpy.CreateDomain_management("montgomery.gdb", domName, "Valid pipe materials", "TEXT", "CODED")
#Store all the domain values in a dictionary with the domain code as the "key" and the
#domain description as the "value" (domDict[code])
domDict = {"CI":"Cast iron", "DI": "Ductile iron", "PVC": "PVC", \
"ACP": "Asbestos concrete", "COP": "Copper"}
# Process: Add valid material types to the domain
#use a for loop to cycle through all the domain codes in the dictionary
for code in domDict:
arcpy.AddCodedValueToDomain_management(gdb, domName, code, domDict[code])
# Process: Constrain the material value of distribution mains
arcpy.AssignDomainToField_management(inFeatures, inField, domName)
except Exception as err:
print(err.args[0])
环境
许可信息
- ArcGIS Desktop Basic: 是
- ArcGIS Desktop Standard: 是
- ArcGIS Desktop Advanced: 是