OSM 路网提取

OSM 路网提取

• highway=* tag

• Osmosis 工具

• Python 库: OSMnx

• Python 库: OSM2GMNS

1. OSM 中道路元素信息

通过 highway=* 指示

2. Osmosis 工具 过滤标签

2.1 Osmosis 工具简介

Osmosis: Osmosis OSM website; Detailed Usage

2.1 实例

实例 1： 提取所有 highway=* 的标签

osmosis ^
  --read-xml city.osm ^
  --tag-filter ^ 
    accept-ways highway=* ^
  --used-node ^
  --write-xml highways.osm

• --tag-filter 提取标签或（--tf）
  • 参数：accept-ways 和 reject-ways

实例 2： 提取公共道路。来源：OSMnx 库 drive 过滤条件 site

osmosis ^
  --read-xml city.osm ^
  --tf accept-ways highway=* ^
  --tf reject-ways ^
    area=yes ^
    access=private ^
    highway=abandoned,bridleway,bus_guideway,construction,corridor,cycleway,elevator,escalator,footway,path,pedestrian,planned,platform,proposed,raceway,service,steps,track ^
    motor_vehicle=no ^
    motorcar=no ^
    service=alley,driveway,emergency_access,parking,parking_aisle,private ^
  --used-node ^
  --write-xml city-network.osm

注意： ^ 在 windows cmd 中表示连接，在 linux 系统中，用 \

3 Python 库：OSMnx

3.1 简介

• 将 OSM 路网优化为 NetworkX 中的 Graph

• 官网

• 建议

  • 先使用 osmosis 工具从原始 OSM 文件中提取路网标签，即：highway=*

  • 注意：OSMnx 库遇到缺失点会报错

• 实例代码

import osmnx as ox

osm_file  = r'network.osm'
save_path = r'/network'

# extract graph (networkx.Graph object) from osm file
net = ox.graph.graph_from_xml(osm_file, 
                              network_type="drive",
                              retain_all=False)
# save to shapefile
ox.io.save_graph_shapefile(net, save_path)

3.3 预设路网过滤条件

提取路网的 6 种设置（site）

• 'drive'

["highway"]
["area"!~"yes"]
["access"!~"private"]
["highway"!~"abandoned|bridleway|bus_guideway|construction|corridor|cycleway|elevator|escalator|footway|path|pedestrian|planned|platform|proposed|raceway|service|steps|track"]
["motor_vehicle"!~"no"]
["motorcar"!~"no"]
["service"!~"alley|driveway|emergency_access|parking|parking_aisle|private"]

• 'drive_service'

["highway"]
["area"!~"yes"]
["access"!~"private"]
["highway"!~"abandoned|bridleway|bus_guideway|construction|corridor|cycleway|elevator|escalator|footway|path|pedestrian|planned|platform|proposed|raceway|steps|track"]
["motor_vehicle"!~"no"]
["motorcar"!~"no"]
["service"!~"emergency_access|parking|parking_aisle|private"]'

• 'walk'

["highway"]
["area"!~"yes"]
["access"!~"private"]["highway"!~"abandoned|bus_guideway|construction|cycleway|motor|planned|platform|proposed|raceway"]["foot"!~"no"]
["service"!~"private"]',

• 'bike'

["highway"]
["area"!~"yes"]
["access"!~"private"]
["highway"!~"abandoned|bus_guideway|construction|corridor|elevator|escalator|footway|motor|planned|platform|proposed|raceway|steps"]
["bicycle"!~"no"]
["service"!~"private"]

• 'all'

["highway"]
["area"!~"yes"]
["access"!~"private"]
["highway"!~"abandoned|construction|planned|platform|proposed|raceway"]
["service"!~"private"]

• 'all_private'

["highway"]
["area"!~"yes"]
["highway"!~"abandoned|construction|planned|platform|proposed|raceway"]

4 OSM2GMNS

OSM2GMNS: github