可视化两条相互偏移的街道

如何解决可视化两条相互偏移的街道

我正在使用 osmnx 包来可视化街道网络。我想想象一条道路相反方向的两条（两条）车道。我正在使用此代码 https://github.com/gboeing/osmnx/issues/162

但是我不知道如何在地图上添加输出点。请你帮助我好吗？或者，如果您知道另一个具有这种可能性的软件包，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,y2),h)
             
        line = [(x1,y2)]
        lines.append(line)

解决方法

我发现这个问题对于 really 寻找单向街道的用例也很有趣。 OSM 中的 oneway 属性对于分隔公路的每个方向也显示为 True。

您可以通过按高速公路类型（OneWay == True 和 Highway == 高速公路）过滤来接近，但对于我的用例来说，如上所述检查平行似乎更准确。