class_docstr: Standardize an H2OFrame by demeaning and scaling each column.
  
  The default scaling will result in an H2OFrame with columns
  having zero mean and unit variance. Users may specify the
  centering and scaling values used in the standardization of
  the H2OFrame.
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docstr: Undo the scale transformation.
  
  :param X: An H2OFrame; may contain NAs and/or categoricals.
  :param y: None (Ignored)
  :param params: (Ignored)
  :returns: An H2OFrame
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code: def inverse_transform(self, X, y=None, **params):
      """
      Undo the scale transformation.
  
      :param X: An H2OFrame; may contain NAs and/or categoricals.
      :param y: None (Ignored)
      :param params: (Ignored)
      :returns: An H2OFrame
      """
      for i in range(X.ncol):
          X[i] = self.means[i] + self.stds[i] * X[i]
      return X
  
imports: import warnings
  from .transform_base import H2OTransformer
label_desc: Use image node_id 6 for calling the H2OScaler obj's underlying member method code with example usage: obj.inverse_transform(X, y) and returns: X