RoutingΒΆ

digraph { label="Working of Routing tab"; if_same_level[shape="diamond", style=""]; yes[shape="box", label="yes"]; no[shape="box", label="no"] "Input From and To" -> "Select the place names from the search \ndropdown results" -> "Set Steps or Lift \n(Default: Steps)" -> "Click Show Route button" -> "Function call from_to_route() \n(home.html)" -> "Ajax call to python function from_to_route \n(views.py)" -> "Extract levels and names" -> "Read SHP files" -> if_same_level -> yes; if_same_level -> no; yes -> "Find the PlaceNode for From and To" -> "Python function solve_network() \ncall with those nodes" -> "Return points of the route" -> "Generate line from the set of points \n(home.html)" ; no -> "Find the PlaceNode and level for From" -> "Read the travel mode (steps / lift)" -> "Find the nearest steps / lift PlaceNode iteratively \nusing nearest_facility() function" -> "Find the path from that point to the destination using solve_network()" -> "Return points of the route for both the levels" -> "Generate line from the set of points \n(home.html)" ; }

The above flowchart explains how Routing works for multiple levels.