def mean(self, column):
"""
Calculate Mean value of DDF Column
:param column: the column name or index
:return: the mean value
"""
col_name = util.parse_column_str(self.colnames, column)
return float(self._jddf.getVectorMean(col_name))
def mean(self, column):
"""
Calculate Mean value of DDF Column
:param column: the column name or index
:return: the mean value
"""
col_name = util.parse_column_str(self.colnames, column)
return float(self._jddf.getVectorMean(col_name))
def var(self, column):
"""
Compute variance and standard deviation of a DistributedDataFrame's column
:param column: the column name or index
:return: a tuple of two elements (variance, standard deviation)
"""
col_name = util.parse_column_str(self.colnames, column)
return tuple([float(x) for x in self._jddf.getVectorVariance(col_name)])
def var(self, column):
"""
Compute variance and standard deviation of a DistributedDataFrame's column
:param column: the column name or index
:return: a tuple of two elements (variance, standard deviation)
"""
col_name = util.parse_column_str(self.colnames, column)
return tuple(
[float(x) for x in self._jddf.getVectorVariance(col_name)])