code: def topDownCompute(self, encoded):
      
  
      #Decode to delta scalar
      if self._prevAbsolute==None or self._prevDelta==None:
        return [EncoderResult(value=0, scalar=0,
                               encoding=numpy.zeros(self.n))]
      ret = self._adaptiveScalarEnc.topDownCompute(encoded)
      if self._prevAbsolute != None:
        ret = [EncoderResult(value=ret[0].value+self._prevAbsolute,
                            scalar=ret[0].scalar+self._prevAbsolute,
                            encoding=ret[0].encoding)]
  #      ret[0].value+=self._prevAbsolute
  #      ret[0].scalar+=self._prevAbsolute
      return ret
docs: [ScalarEncoder class method override]