想象相互偏移的双向街道

Question

我使用osmnx软件包来可视化街道网络。我想想象一下道路相反方向的两条车道。我正在使用这个代码https://github.com/gboeing/osmnx/issues/162

但我不知道如何在地图上添加输出点。你能帮帮我吗？或者，如果你知道另一个包有这种可能性，请分享。非常感谢

place_name = 'Cergy, France'
G = ox.graph_from_place(place_name, network_type = 'drive')
lines=[]
for u, v, data in G.edges(keys=False, data=True):
    if 'geometry' in data:
        # if it has a geometry attribute (a list of line segments), add them
        # to the list of lines to plot
        xs, ys = data['geometry'].xy
        points = list(zip(xs, ys))
        #parallel shift distance
        h = 1

        if not data['oneway']:
            # for each point excluding the start point and end point, shift point based on 
            # line to next point
            transformed_points = [points[0]]
            # get pairs of points on the line segment
            for p1,p2 in zip(points[1:], points[2:]):
                (x1,y1) = parallel_point_shift(p1,p2,h)[0]
                transformed_points.append((x1,y1))

                transformed_points.append(points[-1])
                points = transformed_points

            lines.append(list(points))
        else:
        # if it doesn't have a geometry attribute, the edge is a straight
        # line from node to node
            x1 = G.nodes[u]['x']
            y1 = G.nodes[u]['y']
            x2 = G.nodes[v]['x']
            y2 = G.nodes[v]['y']

        if not data['oneway']:
            ((x1,y1), (x2,y2)) = parallel_point_shift((x1,y1),(x2,y2), h)
             
        line = [(x1, y1), (x2, y2)]
        lines.append(line)

Answer 1

我发现这个问题对于真的寻找单行道的用例也很有趣。OSM中的“单向”属性对于分割公路的每个方向也显示为True

您可以通过按高速公路类型（one-way==True和highway==motorway）进行筛选来接近，但对于我的用例，上面所做的并行检查似乎更准确