问题描述
我想使用Graphhopper进行路由，方法是使用其OSM ID而不是经纬度坐标来标记起点和终点.这可能吗?还可以使用其OSM ID获得优势吗?
I want to use Graphhopper for routing, by marking start and stop points using their OSM id instead of lat,lon coordinates. Is this possible? Is it also possible to get an edge using its OSM id?
谢谢
推荐答案
我看不到GraphHopper的用法，尽管对于其他应用程序可能很方便(不确定)，但存在缺点.例如.一个OSM ID与边缘ID列表匹配，而且OSM ID不是静态的，因此不建议将其用作标识符.例如.假设合并或拆分方式.
I do not see the use for GraphHopper, although it can be handy to have for other applications (not sure) but there are drawbacks. E.g. one OSM id matches to a list of edge ids, also the OSM id is not static and therefor not recommended to be used as identifier. E.g. assume the case where ways are merged or splitted.
也就是说，您将必须在导入时存储"OSM_ID到列表"关系.例如.参见OSMReader.getOsmIdOfInternalEdge以获取相反的Map关系"edgeId to OSM_ID".
That being said you would have to store the "OSM_ID to List" relation at import time. E.g. see OSMReader.getOsmIdOfInternalEdge for the opposite Map relation "edgeId to OSM_ID".
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