Tagged Questions
5
votes
5answers
346 views
Improve performances on distance coverage routing - PostgreSQL
I have to create layers of land coverage from one point to anywhere around on a given street network for a given distance (ex: FROM house, DISTANCE 30000m)
An important factor to understand; I need ...
2
votes
0answers
63 views
Get Multiple Shortest Path using PgRouting in One Query
I am trying to get multiple shortest path using A* Algorithm available in PgRouting.
I referred Solution given by UnderDark ( Link of the Stakoverflow Post ) . But it is not giving me proper Output.
...
3
votes
1answer
170 views
Transit Routing using pgrouting as core routing engine?
i'm a student and i'm working on a project. the aim is given two sets of coordinates(origin & destination) route through the map to determine the optimum path using public transportation and of ...
2
votes
1answer
114 views
Why is pgrouting astar not consistent?
I route from 1 end of a circular route to the opposite end. Visually it is obvious that going clockwise is shorter, however shortest_path_astar sometimes picks clockwise and sometimes anti-clockwise.
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5
votes
2answers
1k views
How to get multiple shortest paths with PgRouting in one query?
I want to run shortest path algorithm on multiple source&target pairs at once and get a result as a table and process it then.
How do I do this? This query does not work:
SELECT a.source, ...
1
vote
1answer
141 views
Is it possible to use assign_vertex_id() POLYGONs?
I'm trying to use pgrouting in order to create a graphe and I have two questions :
Is it possible to use the function assign_vertex_id() with a POLYGON geometry type? I always have the following ...