using QGIS 2.2 and trying to figure out a way to obtain a distance measure for the width of pavement. I have 2 shapefiles: one of points which are at 5m intervals along the pavement centreline and the second is the polyline of the pavement. I'd like to take a distance measure from the point to both edges of the pavement, thus giving me the width. The real challenge is to get a width measurement that is the least angular change and the maximum distance - this is in order to deal with curved and wide pavements as seen in the graphic. Advice will be most welcome - unfortunately, I can't code which is quite a limitation when trying to get to this solution.
Many thanks, Khan