`scipy.stats._mstats_basic:argstoarray`

Signature

def 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.

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

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

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)