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# scipy.stats.mstats.argstoarray

scipy.stats.mstats.argstoarray(*args)

  Constructs a 2D array from a group of sequences.

  Sequences are filled with missing values to match the length of the longest sequence.

  Parameters:
    *args sequences

      Group of sequences.

  Returns:
    argstoarray MaskedArray

      A ( m x n ) masked array, where m is the number of arguments and n the length of the longest argument.

  Notes

  `numpy.ma.vstack` has identical behavior, but is called with a sequence of sequences.

  Examples

  A 2D masked array constructed from a group of sequences is returned.

      >>> from scipy.stats.mstats import argstoarray
      >>> argstoarray([1, 2, 3], [4, 5, 6])
      masked_array(
       data=[[1.0, 2.0, 3.0],
             [4.0, 5.0, 6.0]],
       mask=[[False, False, False],
             [False, False, False]],
       fill_value=1e+20)

  The returned masked array filled with missing values when the lengths of sequences are different.

      >>> argstoarray([1, 3], [4, 5, 6])
      masked_array(
       data=[[1.0, 3.0, --],
             [4.0, 5.0, 6.0]],
       mask=[[False, False,  True],
             [False, False, False]],
       fill_value=1e+20)