code: def onNewValue(self, dateTime, value):
      if value is not None and self.__logValues:
          value = np.log10(value)
      super(HurstExponentEventWindow, self).onNewValue(dateTime, value)
  
file_path: pyalgotrade/pyalgotrade/technical/hurst.py
imports: import numpy
  from pyalgotrade import technical
label_desc: Use image node_id 2 for calling the HurstExponentEventWindow obj's underlying member method code with example usage: obj.onNewValue(dateTime, value) without return types