我想使用交通流量数据来增强具有交通信息(如拥堵系数)的路线。
推荐的方法似乎是获取路线，下载路线所有功能类别和区域的TMC瓦片，并将路线链接与交通流数据中的TMC代码相匹配，例如，请参阅如何使用HERE地图开发自定义路线算法。
然而，交通流文档(TrafficML_RealTime_Specification_v3.2.2.docx)在流项目描述中提到了一个标签"SHP/LID"，以包含链接id，这可以简化整个过程：
SHP/LID:
LinkID associated with the SHP reference. The linkID will be in
driving direction order; “F” represents travel direction FROM
reference node, “T” represents travel direction TO reference
node (For example, 123456789T or 987654321F).
在我的API调用中，我明确地请求形状(responseatattributes=sh)并接收它们，但没有给出"LID"字段。
https://traffic.api.here.com/traffic/6.2/flow.json?corridor=52.5396895，12.9778897；52.5394964,12.9782331；52.5390244,12.9769778；52.539078,12.976774；52.5392067,12.9762483；52.5395072,12.9750788；52.5396144,12.974714；52.5397754,12.974124；52.540011412.9732764；52.5405693,12.9723108；52.5409126,12.9719353；52.5415349、12.97068；52.5416744,12.9694784；52.5404727,12.9654121；52.538734712.9640496；52.5384343,12.9646397；52.538069512.9651332；52.5379193,12.965219；52.5370181,12.9656482；52.5359452,12.9659379；52.534958112.9661417；52.5339067,12.9663348；1000&responseatattributes=sh，fc&app_id＝xxx&app_code=yyy
{
"RWS": [
{
"RW": [
{
"FIS": [
{
"FI": [
{
"TMC": {
"PC": 10213,
"DE": "Berlin-Spandau",
"QD": "+",
"LE": 4.18578
},
"SHP": [
{
"value": [
"52.55838,12.96583 52.55761,12.96545 52.55705,12.9652 52.55641,12.96494 52.55588,12.96473 52.55577,12.96468 "
],
"FC": 1
},
{
"value": [
"52.55577,12.96468 52.55566,12.96464 "
],
"FC": 1
},
...
{
"value": [
"52.55935,12.96635 52.55838,12.96583 "
],
"FC": 1
}
],
"CF": [
{
"TY": "TR",
"SP": 120,
"SU": 121.78,
"FF": 105,
"JF": 0,
"CN": 0.99
}
]
},
有没有一种方法可以接收带有流数据的永久id？
还有类似的问题和解决方案。
请看下面。
为什么交通数据的TMC与PDE层LINK_TMC_FC的TMC不匹配？