5

I will try explain this as best I can.

I have a point on a map and I want to create buffers surrounding the site; for example, 10Km, 20Km 50Km. This is easy. But I also need to show buffers for distance from site, based on road network. lets says 30mins, 60mins 180mins etc.

I have a detailed road network map showing the various road classes, and I could assign average speeds to them but from here...i am lost.

Is this possible in QGIS 2.6.1.

Also if i could use Googles route calculator it would be AMAZING!

Oh and i have tried the route calculator tool, but i want to put in point a, then identify max travel time, then show polygon of area.

  • Is this what you're looking to do – dassouki Sep 24 '15 at 15:40
3

You can either use pgRouting or if not using your data but the OSM street network would be fine, use the OSM Route plugin: Enter a start point and fill out the Accessibility Analysis options.

OSM Route Accessibility Analysis

Isochrones from OSM Route

  • Which one do you mean? I edited the answer to show how to do it in OSM Route. – bugmenot123 Sep 25 '15 at 11:18
  • Okay this looks like what i am looking for, however, i just cant check it now, i will do so when i can. – Ger Sep 25 '15 at 14:56
  • Looks ideal, but not working!!! For OSM that is. PGrouting i cant find. – Ger Sep 25 '15 at 15:28
  • OSMroute plugin does not work since OpenRouteService API has been changed. Check out another plugin called OSMtools. – Runge Jun 4 '17 at 9:51
1

For whoever also stumbles on this question. Now more than 2 years and QGis 3.X has become more mature, one could achieve this by ORS tools or QNEAT3

  • ORS tools uses the Open Route Services API (online) and has some limitations
  • QNEAT3 can be used for offline/own network files

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