I was wondering if there is a way to create centre lines from polygons in QGIS? I have a polygon layer, but ideally need the centrelines as a separate file.
there is a good tool with the name of ET GeoWizards 10.2 for Esri products, but i dont know whether it is a good solution or not...
you can get some info from here
beside this in grass you can check out r.thin function for basic use..
i hope it helps you...
you can try This algorithme:
i don't know how it could be implemented on Qgis
i wish it could help
How exactly should be the result? An approximation is perimeter divided by 2.
To get a better result: You can manually measure some polygons.Then determine the difference between the measurement and perimeter divided by 2. Apply this correctionfactor to the whole datset.