如何在地图上绘制道路路线图,以北京六环线为例,成果图如下:
首先最重要的是我们需要获取道路坐标点信息,它是由一系列坐标点组成的,这里依托高德地图获取坐标信息。
打开高德地图,搜索“五环”,同时用浏览器抓包,得到道路坐标接口:
可以发现,坐标的数据藏的还是比较隐蔽的,可能也是一种反爬措施,反正我是翻了半天才找到,差点想放弃了。
然后用python代码模拟获取坐标数据值:
import requests
import json
import requests
url = "https://www.amap.com/service/poiInfo"
names=['一环','二环','三环','四环','五环','六环']
datas=[]
for name in names:
querystring = {"query_type":"TQUERY","pagesize":"20","pagenum":"1","qii":"true","cluster_state":"5","need_utd":"true",
"utd_sceneid":"1000","div":"PC1000","addr_poi_merge":"true","is_classify":"true","zoom":"10.59","city":"110000",
"geoobj":"115.714446|39.806938|117.024755|40.037228","keywords":name}
headers = {
'User-Agent&#