MATLAB Function Reference
zeros

Create an array of all zeros

Syntax

• ```B = zeros(n)
B = zeros(m,n)
B = zeros([m n])
B = zeros(d1,d2,d3...)
B = zeros([d1 d2 d3...])
B = zeros(size(A))
```

Description

```B = zeros(n) ``` returns an `n`-by-`n` matrix of zeros. An error message appears if `n` is not a scalar.

```B = zeros(m,n) or B = zeros([m n]) ``` returns an `m`-by-`n` matrix of zeros.

```B = zeros(d1,d2,d3...) or B = zeros([d1 d2 d3...]) ``` returns an array of zeros with dimensions `d1`-by-`d2`-by-`d3`-by-`... .`

```B = zeros(size(A)) ``` returns an array the same size as `A` consisting of all zeros.

Remarks

The MATLAB language does not have a dimension statement; MATLAB automatically allocates storage for matrices. Nevertheless, for large matrices, MATLAB programs may execute faster if the `zeros` function is used to set aside storage for a matrix whose elements are to be generated one at a time, or a row or column at a time. For example

• ```x = zeros(1,n);
for i = 1:n, x(i) = i; end
```

`eye`, `ones`, `rand`, `randn`