title: Some questions about Calculating "street_length_avg" in Linzhi City, Xizang, China
body: <p>I tried to download shapefiles of some cities and calculate their 'street_length_avg' by OSMnx, but found some error about nodes of  Linzhi City, Xizang, China:</p>
  
  <p><a href="https://i.stack.imgur.com/8mheX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8mheX.png" alt="Road network 1 of Linzhi City, Xizang, China"></a> 
  <a href="https://i.stack.imgur.com/actNL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/actNL.png" alt="Road network 2 of Linzhi City, Xizang, China"></a></p>
  
  <p>As shown in figures，I found that nodes on a long road have not been properly simplified，which will lead to the incorrect calculations of ‘street_length_avg’(46.62, less than any city in China)</p>
  
  <p><a href="https://i.stack.imgur.com/LQIbS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LQIbS.png" alt="Statistical data of Linzhi City, Xizang, China"></a></p>
  
  <p>But at the same time, the calculated value of the road network (like Shanghai，China) with more intersections is normal.</p>
  
  <p><a href="https://i.stack.imgur.com/DgiJT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DgiJT.png" alt="Statistical data of Shanghai，China"></a></p>
  
  <p>Is there something wrong with my operation? Here are my code:</p>
  
  <pre><code>G6 = ox.graph_from_place('Linzhi City, Xizang, China')
  ox.save_graphml(G6, filename=("林芝市" + '.graphml'), folder="F:/python_code/data/", gephi=False)
  ox.save_graph_shapefile(G6, filename=("林芝市" + '.shp'), 
  folder="F:/python_code/data/cityshapefile/")
  stats =ox.basic_stats(G6)
  print(str(stats['street_length_avg']))
  fig, ax = ox.plot_graph(G6)
  </code></pre>