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# numpy.ma.hstack

`numpy.ma.``hstack`(tup)

  > Stack arrays in sequence horizontally (column wise)

  > Take a sequence of arrays and stack them horizontally to make a single array. Rebuild arrays divided by `hsplit`.

  Parameters: | tup : sequence of ndarrays All arrays must have the same shape along all but the second axis.
  Returns: | stacked : ndarray The array formed by stacking the given arrays.

  See also

  `vstack`
    Stack along first axis.
  `dstack`
    Stack along third axis.
  `concatenate`
    Join arrays.
  `hsplit`
    Split array along second axis.

  Notes

  The function is applied to both the _data and the _mask, if any.

  Examples

      >>> a = np.array((1,2,3))
      >>> b = np.array((2,3,4))
      >>> np.hstack((a,b))
      array([1, 2, 3, 2, 3, 4])
      >>> a = np.array([[1],[2],[3]])
      >>> b = np.array([[2],[3],[4]])
      >>> np.hstack((a,b))
      array([[1, 2],
             [2, 3],
             [3, 4]])

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