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# scipy.sparse.coo_matrix.argmax

coo_matrix.argmax(axis=None, out=None)

  Return indices of maximum elements along an axis.

  Implicit zero elements are also taken into account. If there are several maximum values, the index of the first occurrence is returned.

  Parameters:
    axis{-2, -1, 0, 1, None}, optional

      Axis along which the argmax is computed. If None (default), index of the maximum element in the flatten data is returned.

    out None, optional

      This argument is in the signature solely for NumPy compatibility reasons. Do not pass in anything except for the default value, as this argument is not used.

  Returns:
    ind numpy.matrix or int

      Indices of maximum elements. If matrix, its size along axis is 1.