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import torch
import numpy as np
import networkx as nx
from database.database import DB
import pandas as pd
import networkx as nx
import math
from itertools import tee
import shapefile
import os
def pairwise( iterable ):
"""Returns an iterable access binary tuple
s -> (s0,s1), (s1,s2), (s2, s3), ..."""
a, b = tee( iterable )
next(b, None)
return zip(a, b)
def swith_xy(tuples):
x,y=tuples
return (y,x)
db=DB()
df=pd.DataFrame(db.db_get_node())
df.columns=['index','source_x','source_y','target_x','target_y','distance']
G=nx.Graph()
for j in range(len(df)):
G.add_edge((df['source_x'][j],df['source_y'][j]),(df['target_x'][j],df['target_y'][j]),length=df['distance'][j])
nx.write_gpickle(G,'OSM_gpickle.gpickle')