I'm writing a small application in pyside/Qt to plot a sumo road network together with a OSM layer. I basically used QPolygon as a base object created using the coordinates of each edge (in XML, the shape field). So far the rendering of the map is good, including junctions and edges. However, there is some mismatch between the rendering of the edges and the underlying OSM layer (see figure below). I think it's because of the zoom/boundary but I don't understand the issue. you'll find a demo map and the python code in the github repository (see link below), and a screenshot of the application: the plotted pentagon in SUMO network is way bigger than the one in the underlying OSM map d Link to Python Code and Road network Continue reading...
