Consider a polygon that represents the area of New York State
I made a 125KM buffer from this layer
My problem is that the new buffer layer is covering the source polygon and I need only the outer borderlines of the 125KM radius. I need it as a new line layer for future work, so just changing the fill of the polygon into 100% transparent will not work .
How can I display only a line layer that is located in a distance of 125KM from the borderline of the New York State polygon?
Vector -> Geometry Tools -> Polygons to Lines.