使用 osmnx 绘制多条路线

如何解决使用 osmnx 绘制多条路线

我正在尝试绘制多条路线，但出现错误 - networkx.exception.NetworkXError：nbunch 中的节点 [20461931,75901933] 不是有效节点。

绘制单独的路线不再是问题，但一起绘制时会出现错误。

import networkx as nx
import osmnx as ox


# Create Graph 
G = ox.graph_from_place('Munich,Germany',network_type='drive')


# route1 calc
origin_node = 20461931
destination_node =   75901933
route1 = nx.shortest_path(G,origin_node,destination_node)

# route2 calc
start =   (48.1336081,11.58172095)
end = (48.17822992,11.53754219)
start_node = ox.get_nearest_node(G,start)
end_node = ox.get_nearest_node(G,end)
route2 = nx.shortest_path(G,start_node,end_node,weight='travel_time')

#plot the route with folium
route_list = [route1,route2]
route_map = ox.plot_route_folium(G,route_list)

# save as html file then display map as an iframe
filepath = 'route.html'
route_map.save(filepath)
 

解决方法

您正在向它传递一个列表列表节点，而不是一个节点列表。有关使用详情，请参阅 docs。

import osmnx as ox
ox.config(use_cache=True,log_console=True)

G = ox.graph_from_place('Munich,Germany',network_type='drive')
route1 = ox.shortest_path(G,20461931,75901933,weight=None)

orig = ox.get_nearest_node(G,(48.1336081,11.58172095))
dest = ox.get_nearest_node(G,(48.17822992,11.53754219))
route2 = ox.shortest_path(G,orig,dest,weight='travel_time')

route_map = ox.plot_route_folium(G,route1,route_color='#ff0000',opacity=0.5)
route_map = ox.plot_route_folium(G,route2,route_map=route_map,route_color='#0000ff',opacity=0.5)
route_map.save('route.html')