text: """
  Constants for the package
  =========================
  """
  from  pyspark.sql import  SparkSession
  
  
  beijing_lat_box = [39.6, 40.2]
  beijing_lon_box = [116.1, 116.7]
  width = 1
  n = lon_cells = 100
  m = lat_cells = 100
  OD_time_frame = 2*60*60
  delta_avg_ts = 400
  speed = 0.0005 # graduses/ second...
  timestamps_per_hour = 6
  
  
  
  
  spark = SparkSession.builder\
      .enableHiveSupport()\
      .appName('Distributed Trajectories') \
      .master("local[*]")\
      .getOrCreate()