Trying to plot two or more infrastructures in the same figure using OSMnx

问题

I'm trying to plot multiple infrastructure networks(for example streets, rails and buildings) in the same figure using OSMnx but not really having success.

This is one of my attempts:

import osmnx as ox
dist = 2000
point = (41.877092, -87.628)
north, south, east, west = ox.bbox_from_point(point, distance=dist)
bbox_proj = ox.bbox_from_point(point, dist, project_utm=True)
streets = ox.core.osm_net_download(
    north=north,
    south=south,
    east=east,
    west=west,
    infrastructure='way["highway"]'
    )
railways = ox.core.osm_net_download(
    north=north,
    south=south,
    east=east,
    west=west,
    infrastructure='way["railway"]'
    )
buildings = ox.core.osm_net_download(
    north=north,
    south=south,
    east=east,
    west=west,
    infrastructure='way["building"]'
    )
streets[0]['elements'] = streets[0]['elements'] + railways[0]['elements'] + buildings[0]['elements']
net = streets
G = ox.core.create_graph(net)
G = ox.truncate_graph_bbox(G, north, south, east, west, truncate_by_edge=True)
G = ox.project_graph(G)
_, _ = ox.plot.plot_graph(G, bbox=bbox_proj, fig_height=10, node_size=0, edge_color='black', edge_linewidth=0.5, save=True)

Result of this code is only ploting the first 2 infrastructures, streets and rails, but not buildings:

Result of ox.plot_figure_ground (only plots streets infrastructure):

Buildings data is being downloaded despite not being plotted(I know about plot_buildings but I don't want colored buildings, just lines).

Before this I was trying to find a way to add multiple filters all at once in the infrastructure parameter. Something like:

nets = ox.core.osm_net_download(
    north=north,
    south=south,
    east=east,
    west=west,
    infrastructure='way["highway"],way["railway"],way["buildings"]'
    )

But not sure if this is possible.

Any way to plot more than two of them in one figure and, if posible, concisely in OSMnx?

回答1:

Try replacing buildings with building. The correct OSM key is building without an "s" at the end. In fact, most OSM keys are singular.

回答2:

Yes it is possible, and this will do it concisely:

import matplotlib.pyplot as plt
import networkx as nx
import osmnx as ox
ox.config(use_cache=True, log_console=True)

# get graphs of different infrastructure types, then combine
place = 'Berkeley, California, USA'
G1 = ox.graph_from_place(place, custom_filter='["highway"~"residential"]')
G2 = ox.graph_from_place(place, custom_filter='["railway"~"rail"]')
G = nx.compose(G1, G2)

# get building footprints
fp = ox.footprints_from_place(place)

# plot highway edges in yellow, railway edges in red
ec = ['y' if 'highway' in d else 'r' for _, _, _, d in G.edges(keys=True, data=True)]
fig, ax = ox.plot_graph(G, bgcolor='k', edge_color=ec,
                        node_size=0, edge_linewidth=0.5,
                        show=False, close=False)

# add building footprints in 50% opacity white
fp.plot(ax=ax, color='w', alpha=0.5)
plt.show()

See also https://stackoverflow.com/a/62883614/7321942 and https://stackoverflow.com/a/62720802/7321942

来源：https://stackoverflow.com/questions/47784074/trying-to-plot-two-or-more-infrastructures-in-the-same-figure-using-osmnx

标签

python

plot

openstreetmap

networkx