I have a requirement to trace path on the points present in the shapefile which is loaded in Quantum GIS. This should enable the user to specify their own routes within the present network.
There will be existing points and lines present in the shapefile. Whenever the user clicks on the points there should be a line drawn between the points selected and the route should be saved as a shapefile.
I have searched and found in many places of options like pgRouting and shortest path routing and that is not what I require. My need is simple and due to these options being available I'm not able to find a simple solution. It's very much similar to the below question, which does not yield a clear solution.
I am a Newbie in GIS. Any guidance will be very much appreciated.