QGIS – How to Create Buffer-Lines Alongside Vector Lines in QGIS

Question

I am currently doing a map of a farm, to see which roads needs to be repaired.

Those roads are either one sided fenced, on both sides fenced or not fenced at all. I want to make buffer lines around the already mapped roads (vector lines), which have fences. Something like this:

I hope this is possible to understand. Of course I can draw additional lines alonside those paths… but this is a hellofa work.

I work with QGIS 🙂

Thanks for your help in advance!

Lukas

Answer 1

GRASS GIS offers this through v.parallel. It can be used from QGIS with the GRASS Toolbox or, even easier, with the Sextante plugin.