使用OSMNX时未绘制街道数据

Question

我正在尝试使用OSMNX绘制各个城市的街道地图。如教程中所示，我已经能够成功地绘制德国柏林，但任何其他城市似乎都空白（只出现背景色）。我已经检查了我的代码是否特定于位置，并且无法找到可能导致错误的任何东西。我尝试了2个美国，瓦伦西亚和柏林的城市，也尝试了唯一正确的绘制柏林的城市。

import osmnx as ox
import networkx as nx
from PIL import Image, ImageOps, ImageColor, ImageFont, ImageDraw
from matplotlib.lines import Line2D
import matplotlib.cm as cm
import matplotlib.colors as colors
import pandas as pd

place = ['Valencia, Spain']
G = ox.graph_from_place(place, retain_all = True, simplify = True, network_type = 'all')

u = []
v = []
key = []
data = []

for uu, vv, kkey, ddata in G.edges(keys = True, data = True):
    u.append(uu)
    v.append(vv)
    key.append(kkey)
    data.append(ddata)

roadColors = []
roadWidths = []

for item in data:
    if 'highway' in item.keys():
        if item['length'] <= 100:
            linewidth = 0.1
            color = '#454545'
            
        elif item['length'] > 100 and item['length'] <= 200:
            linewidth = 0.15
            color = '#676767'
            
        elif item['length'] > 200 and item['length'] <= 400:
            linewidth = 0.25
            color = '#a6a6a6'
            
        elif item['length'] > 400 and item['length'] <= 800:
            linewidth = 0.35
            color = '#bdbdbd'
            
        elif item['length'] > 800:
            linewidth = 0.45
            color = '#d5d5d5'
            
        else:
            linewidth = 0.1
            color = '#a6a6a6'
            
        if 'primary' in item['highway']:
            linewidth = 0.5
            color = '#ffff'

    roadColors.append(color)
    roadWidths.append(linewidth)

latitude = 39.4699
longitude = 0.3763

north = latitude + 0.15
south = latitude - 0.15
east = longitude + 0.15
west = longitude - 0.15

bgcolor = '#061529'

fig, ax = ox.plot_graph(G, node_size = 0, bbox = (north, south, east, west),
                       dpi = 300, bgcolor = bgcolor, save = False,
                       edge_color = roadColors, edge_linewidth = roadWidths,
                       edge_alpha = 1)

fig.tight_layout(pad = 0)

Answer 1

对于Valencia，您写的：

longitude = 0.3763

最好使用通过格林威治。

longitude = -0.3763

在描述Prime子午线以西的位置时，