0

Is there a way to compute isochrones for public transport while using the plug-ins available in QGIS? Or is there another way for making them?

Note: I am not a software engineer which means that some of your answers might exceed my field of study regarding programing or handling specific software.

closed as too broad by Spacedman, John Powell, underdark Feb 4 '16 at 20:25

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • 1
    Do you have public transport data? Or is that part of the problem? If so, then this is a big problem and will depend on where on earth you are. – Spacedman Feb 4 '16 at 15:23
  • No, I don't have the public transport data. That is the problem. I thought that maybe the transport information can be called directly from the software as in the case of using the OSM plug-in needed for making the isochrones for cars. I am trying to compute them for Denmark. – Adela-Ioana Moldovan Feb 8 '16 at 10:32
  • I suspect that OSM plugin knows the speed limits on roads and works out accordingly. I doubt it knows where buses, trams, and trains go. Public transport isochrones are also very dependent on the time of day and day of week... – Spacedman Feb 8 '16 at 10:57
3

It's a bit difficult to answer your question without further details, but drawing isochrones is a relatively frequent (and complex) issue. QGIS alone (including its plugins) does not provide a simple way to compute isochrones. A common solution is to use a PostGIS database along with pgRouting.

You can refer to these posts in GIS SE:

That being said, there is a QGIS plugin called Walking time, which, combined with the Interpolation plugin, might be of use in your case. It may be possible to tweak it to fit your needs, but I don't know if it works well.

1

See Anita's demo here:

http://anitagraser.com/2013/07/07/public-transport-isochrones-with-pgrouting/

It will require pgRouting

  • It will also require a public transport data set, which the questioner has just told us they don't have. – Spacedman Feb 8 '16 at 10:56
  • @Spacedman I didn't catch that... thanks. – DPSSpatial Feb 8 '16 at 13:41

Not the answer you're looking for? Browse other questions tagged or ask your own question.