创建一个新节点并更新图

时间:2019-06-25 14:45:56

标签: python pandas osmnx

我正在模拟车辆的穿越环境。某些边缘很长,以致车辆无法在特定时间段内完成行驶。我想在长边上创建中间节点。这样,我可以看到车辆在特定时间段后在边缘停下的位置。我试图在从node_1到node_2的边缘上创建一个新节点,但无法使其正常工作。谁能帮我解决这个问题?非常感谢你!

import networkx as nx
import osmnx as ox
import requests
import matplotlib.cm as cm
import matplotlib.colors as colors
import csv, sys
import numpy
import numpy as np
from shapely import wkt
from shapely.geometry import LineString
import pandas as pd

ox.config(use_cache=True, log_console=True)
ox.__version__

G = ox.graph_from_place('Blacksburg, Virginia, USA', network_type='drive')
# ox.plot_graph(G)


node_1 = ox.get_nearest_node(G, (37.2238, -80.4402)); #276308465
node_2 = ox.get_nearest_node(G, (37.2109, -80.43)); #5288322283

#GPS of an intermediate node, node_3: (37.2153, -80.4344)

route = nx.shortest_path(G, node_1, node_2, weight='length')
ox.plot_graph_route(G, route, node_size=0)


gdf_nodes, gdf_edges = ox.graph_to_gdfs(G)
# gdf_nodes['geometry'] = gdf_nodes.apply(lambda row: Point(row['x'], row['y']), axis=1)
# gdf_edges['geometry'] = gdf_edges.apply(lambda x: redistribute_vertices(x.geometry, 0.04), axis=1)

# gdf_nodes.append({'highway':'circle','osmid':'3586727936','ref':'a','x':'-80.4402','y':'37.2238','geometry':'Point(-80.4402,37.2238)'}, ignore_index=True)
# graph = ox.gdfs_to_graph(gdf_nodes, gdf_edges) 

0 个答案:

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