I am trying to create polygons between contour polylines within a defined area (for which i have both polygon and polyline shps) but I seem to be thwarted at every turn. Using QGIS 2.14, I am sure it is an easy enough operation but the actual process eludes me. I have performed the task easy enough in ArcMap 10.x, but need to reproduce in QGIS/GRASS/SAGA.
As far as I know, the Polygonize tool from the Processing toolbox is the one that I'm after. Unfortunately, it spits out the same error:
'NoneType' object has no attribute 'isMultipart'