zeros 関数
$$ O = \begin{pmatrix} 0 & 0 & \ldots & 0 \\ 0 & 0 & \ldots & 0 \\ \vdots & \vdots & \ddots & \vdots \\ 0 & 0 & \ldots & 0 \end{pmatrix} $$
Octave でゼロ行列 (zero vector) を作成するには、組み込みの zeros 関数を使用します。
>> O = zeros(3)
O =
0 0 0
0 0 0
0 0 0
>> O = zeros(2, 4)
O =
0 0 0 0
0 0 0 0
zeros のドキュメント
>> help zeros
'zeros' is a built-in function from the file libinterp/corefcn/data.cc
-- zeros (N)
-- zeros (M, N)
-- zeros (M, N, K, ...)
-- zeros ([M N ...])
-- zeros (..., CLASS)
Return a matrix or N-dimensional array whose elements are all 0.
If invoked with a single scalar integer argument, return a square
NxN matrix.
If invoked with two or more scalar integer arguments, or a vector
of integer values, return an array with the given dimensions.
The optional argument CLASS specifies the class of the return array
and defaults to double. For example:
val = zeros (m,n, "uint8")