1.梳理、总结经纬度处理在Maxcompute平台上的实战应用，如根据gps轨迹数据计算停留点信息。
2.欢迎批评指正，跪谢一键三连！

1.参考代码

• #!/usr/bin/env python
  # coding: utf-8import numpy as np
  from odps.udf import annotate
  from odps.udf import BaseUDAF
  from datetime import datetime@annotate('string,string,double,string->string')
  class ret_tld_by_gps(BaseUDAF):"""计算停留点"""def new_buffer(self):return []def iterate(self, buffer, lati, longi, speed, gpstime):buffer.append([lati, longi, speed, gpstime])def merge(self, buffer