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city-vein's Issues

一个关于数据格式的疑问。

我很认真的看了你写代码,在你处理每一条公交线路时,只有起点经纬度是原始的经纬度坐标,后面的点位数据,你都是拿下一个点位的经纬度减去上一个点位的经纬度的值。在前端数据渲染中,你又反向操作将数据还原成所有点位都是经纬度的数据。为什么一开始你在保存数据的时候不把所有的点位都以经纬度的格式存储下来?

程序执行

运行main.py 当程序执行到 _get_line_info

try:
           logger.info("try")
           response = requests.get(targetUrl, headers=self.headers)
           content = response.content
           content = dict(eval(content))
      
           logger.info("polyline info: %s" % content)(不输出)
           

就不执行的了,也不报异常, 咋回事? 求指导

数据来源?

非常棒的项目,请问数据是从哪里得到的呢?

香港公交数据的可视化似乎坐标整体有偏移

地图坐标系的三种常见类型

  1. WGS-84原始坐标系,一般用国际GPS纪录仪记录下来的经纬度,通过GPS定位拿到的原始经纬度,Google和高德地图定位的的经纬度(国外)都是基于WGS-84坐标系的;但是在国内是不允许直接用WGS84坐标系标注的,必须经过加密后才能使用;
  2. GCJ-02坐标系,又名“火星坐标系”,是我国国测局独创的坐标体系,由WGS-84加密而成,在国内,必须至少使用GCJ-02坐标系,或者使用在GCJ-02加密后再进行加密的坐标系,如百度坐标系。高德和Google在国内都是使用GCJ-02坐标系,可以说,GCJ-02是国内最广泛使用的坐标系;
  3. 百度坐标系:bd-09,百度坐标系是在GCJ-02坐标系的基础上再次加密偏移后形成的坐标系,只适用于百度地图。(目前百度API提供了从其它坐标系转换为百度坐标系的API,但却没有从百度坐标系转为其他坐标系的API)

应该是需要做坐标转换的,详见https://blog.csdn.net/a13570320979/article/details/51366355

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