#NEWLINE# def fit_transform( self , X ) : #NEWLINE# #INDENT# 'Fits and transforms an arry.\n\n        Parameters\n        ----------\n        X : {array-like, sparse matrix}, shape = [n_samples, n_features]\n            Array of data vectors, where n_samples is the number of samples and\n            n_features is the number of features.\n\n        Returns\n        --------\n        X_tr : {array-like, sparse matrix}, shape = [n_samples, n_features]\n            A copy of the input array with the columns centered.\n        ' #NEWLINE# self . fit ( X ) #NEWLINE# return self . transform ( X )