error in creating street network

[gvvgomez]

[mafgohary]

Hey, I had the same issue a few days ago.
Apparently, there is an issue with geopandas that would prevent the code from going forward, particularly the .data.

I replaced that like here with the following code, and it worked
import geopandas as gpd
import networkx as nx
from shapely.geometry import LineString, Point

Load sidewalk layer

sidewalks = gpd.read_file("Cities/Cambridge/Data/sidewalks.geojson")

Ensure it contains line geometries

sidewalks = sidewalks[sidewalks.geometry.type == "LineString"]

Create an empty graph

G = nx.Graph()

Iterate through sidewalk segments and add nodes/edges

for line in sidewalks.geometry:
# Extract start and end points
start, end = Point(line.coords[0]), Point(line.coords[-1])

# Add nodes (ensuring uniqueness)
G.add_node(start.wkt, pos=(start.x, start.y))
G.add_node(end.wkt, pos=(end.x, end.y))

# Add edge with weight as geometric distance
G.add_edge(start.wkt, end.wkt, weight=line.length)

Display basic network stats

print(f"Nodes: {len(G.nodes)}, Edges: {len(G.edges)}")