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I am using Qgis 2.14.2, I am trying to create a O-D using the road network that I have in a feature. Is any way or plugin that can help me to plot 500 trips using as a path my road network layer? I know about the flow map plugin, but I do not understand how I should apply it, and if my data would apply it.

My data looks like:

ID - OrgX - OrgY - DestX - DestY

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  • I know with Grass is it possible to do it as well but i am having lots of problems to set everything before to launch the network tool
    – Carlos
    Commented May 16, 2016 at 15:08

1 Answer 1

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You can connect to a postgresql database and use pgrouting with Qgis Here are the features offered :

  • All Pairs Shortest Path, Johnson’s Algorithm
  • All Pairs Shortest Path,Floyd-Warshall Algorithm
  • Shortest Path A*
  • Bi-directional Dijkstra Shortest Path
  • Bi-directional A* Shortest Path
  • Shortest Path Dijkstra
  • Driving Distance
  • K-Shortest Path, Multiple Alternative Paths
  • K-Dijkstra, One to Many Shortest Path
  • Traveling Sales Person Turn
  • Restriction Shortest Path (TRSP)
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  • So I would need to add all my data into Postgresql and then move into QGIS?
    – Carlos
    Commented May 17, 2016 at 7:57
  • there is a tool in Qgis called DB Manager, if you have your data as a vector layer in Qgis you can export it as a Postgresql table and then with the Postgresql's plugin Pgrouting you can have all the above functions
    – Hicham Zouarhi
    Commented May 17, 2016 at 8:17
  • Great, I am trying to follow that Tutorial as well planet.qgis.org/planet/tag/pgrouting Do you think that one would be useful for my problem?
    – Carlos
    Commented May 17, 2016 at 8:23
  • great tutorial, I worked before on a project using the pgr_Dijkstra and pgr_createTopology, plus you won't get lost you can can find in this forum people that developed those functions
    – Hicham Zouarhi
    Commented May 17, 2016 at 8:35
  • You are welcome, good luck with your project
    – Hicham Zouarhi
    Commented May 17, 2016 at 10:53

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