How is cpath made from opath?

[paymonnb]

How is cpath made from opath?

I visualized opath and cpath using each path edge's start node. Since I need the connected nodes list(not separated from previous node), I supposed to use cpath. However cpath seems much unrealistic than opath. Is there any method to improve cpath to be more realistic or make opath to be connected?

opath

cpath

[cyang-kth]

You can check the illustration here

https://fmm-wiki.github.io/docs/documentation/output/

The cpath is created by connecting the opath. The reason you see unrealistic path could be your network contains topology errors and some edges are misconnected.

[paymonnb]

Thank you for your answer.

I downloaded my network based on your 'download_network' code in osmnx_example.

bounds = (126.733235, 126.789141, 37.480174, 37.512656)
x1,x2,y1,y2 = bounds
boundary_polygon = Polygon([(x1,y1),(x2,y1),(x2,y2),(x1,y2)])
G = ox.graph_from_polygon(boundary_polygon, network_type='all_private',simplify=False)
start_time = time.time()
save_graph_shapefile_directional(G, filepath='./network')
print("--- %s seconds ---" % (time.time() - start_time))

I set the network_type to 'all_private'. Is there any problem in my code above?

[paymonnb]

I think cpath has mulitple path like this picture. Original gps data is similar with line above.

[cyang-kth]

I think at the intersection, the lines are not connected correctly.