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Just installed QGIS as I believe I should be able to produce walking and cycling isochrones from a specified point. I have done this pretty easily before using ArcMap, however, I am really struggling with QGIS.
From what I have read, I should be using PGRouting and OSM2PGrouting mapping (which I have installed). I haven't really used SQL before and seek a dummies guide to doing these isochrones. I have read about various ways, most detailing SQL which I am struggling with.
There are a couple of sources which describe how to develop isochrone maps:
Public transport isochrones with pgRouting
This post contains information in great detail on how to install, run and conduct a variety of analyses on isochrone maps with pgRouting. Included a couple of images so you can if it's something you are looking for:
Image of pgRouting driving distance.
Image of Catchment Areas with pgRouting.
Creating drive time polygons using open source tools
This post also contains information on how to create drive-time polygons by using the v.net.iso tool from GRASS which can calculate, for example, the time taken to travel a certain length of road.
