摘要
将冗余信息从事件表中移除,或将包含多个描述性属性的事件表分解为单独的表。
用法
输入表可以是 ArcGIS 支持的任何类型的表。输出表可以是 dBASE 文件或地理数据库表。
如果输入事件没有 ObjectID 字段,在使用此工具之前先使用创建查询表添加虚拟 ObjectID 字段。
路径标识符字段上的属性索引可加快动态分段过程的速度。如果要为动态分段使用输出事件表,建议您选择创建属性索引。
使用创建路径事件图层工具或使用 ArcMap 中的“显示路径事件”命令可在 ArcMap 中显示输出表。
语法
DissolveRouteEvents_lr (in_events, in_event_properties, dissolve_field, out_table, out_event_properties, {dissolve_type}, {build_index})
参数 | 说明 | 数据类型 |
in_events | 行将被聚合的表。 | Table View |
in_event_properties | 输入事件表中由路径位置字段和事件类型组成的参数。
| Route Measure Event Properties |
dissolve_field [dissolve_field,...] | 用于聚合行的字段。 | Field |
out_table | 要创建的表。 | Table |
out_event_properties | 由要写入输出事件表的路径位置字段和事件类型组成的参数。
| Route Measure Event Properties |
dissolve_type (可选) | 指定是串联还是融合输入事件。
| Boolean |
build_index (可选) | 指定是否为写入输出事件表的路径标识符字段创建属性索引。
| Boolean |
代码实例
DissolveRouteEvents 示例(Python 窗口)
import arcpy
from arcpy import env
env.workspace = "C:/Data"
arcpy.DissolveRouteEvents_lr("pavecond.dbf", "rkey LINE fmp tmp", "lanes", "pave_dissolve1.dbf", "rkey LINE fmp tmp")
DissolveRouteEvents 示例 2(独立 Python 脚本)
以下 Python 脚本演示了如何在独立 Python 脚本中使用 DissolveRouteEvents 函数。
# Name: DissolveRouteEvents_Example2.py
# Description: Dissolve line events based on one field (input table is dBASE).
# Author: ESRI
# Import system modules
import arcpy
from arcpy import env
# Set workspace
env.workspace = "D:/Data/pitt_county"
# Set local variables
in_tbl = "pavecond.dbf"
in_props = "rkey LINE fmp tmp" # re-used as out event properties
flds = "lanes"
out_tbl = "pave_dissolve1.dbf"
# Execute DissolveRouteEvents
arcpy.DissolveRouteEvents_lr(in_tbl, in_props, flds, out_tbl, in_props)
DissolveRouteEvents 示例 3(独立 Python 脚本)
以下 Python 脚本演示了如何在独立 Python 脚本中使用 DissolveRouteEvents 函数。
# Name: DissolveRouteEvents_Example3.py
# Description: Concatenate line events based on two fields (input table is file geodatabase).
# Author: ESRI
# Import system modules
import arcpy
from arcpy import env
# Set workspace
env.workspace = "C:/Data/pitt.gdb"
# Set local variables
in_tbl = "pavecond"
in_props = "rkey LINE fmp tmp" # re-used as out event properties
flds = "lanes; curb"
out_tbl = "pave_dissolve2"
# Execute DissolveRouteEvents
arcpy.DissolveRouteEvents_lr(in_tbl, in_props, flds, out_tbl, in_props, "CONCATENATE")
DissolveRouteEvents 示例 4(独立 Python 脚本)
以下 Python 脚本演示了如何在独立 Python 脚本中将 DissolveRouteEvents 函数与个人地理数据库数据结合使用。
# Name: DissolveRouteEvents_Example4.py
# Description: Concatenate line events based on two fields (input table is personal geodatabase).
# Author: ESRI
# Import system modules
import arcpy
from arcpy import env
# Set workspace
env.workspace = "C:/Data/pitt.mdb"
# Set local variables
in_tbl = "pavecond"
in_props = "rkey LINE fmp tmp" # re-used as out event properties
flds = "lanes; curb"
out_tbl = "pave_dissolve2"
# Execute DissolveRouteEvents
arcpy.DissolveRouteEvents_lr(in_tbl, in_props, flds, out_tbl, in_props, "CONCATENATE")
DissolveRouteEvents 示例 5(独立 Python 脚本)
以下 Python 脚本演示了如何在独立 Python 脚本中将 DissolveRouteEvents 函数与 SDE 数据结合使用。
# Name: DissolveRouteEvents_Example5.py
# Description: Dissolve line events based on two fields (input table is enterprise geodatabase).
# Author: ESRI
# Import system modules
import arcpy
from arcpy import env
# Set workspace
env.workspace = "Database Connections/Connection to Jerry.sde"
# Set local variables
in_tbl = gp.QualifyTableName("pavecond", wkspc)
in_props = "rkey LINE fmp tmp"
flds = "lanes; curb"
out_tbl = "pave_dissolve3"
out_props = "rid LINE f_meas t_meas"
# Execute DissolveRouteEvents
arcpy.DissolveRouteEvents_lr(in_tbl, in_props, flds, out_tbl, out_props, "#", "NO_INDEX")
环境
许可信息
- ArcGIS for Desktop Basic: 是
- ArcGIS for Desktop Standard: 是
- ArcGIS for Desktop Advanced: 是