FreeMat: ONES Array of Ones

FreeMat

- Main Page
- Related Pages

ONES Array of Ones

Section: Array Generation and Manipulations

# Usage

Creates an array of ones of the specified size. Two seperate syntaxes are possible. The first syntax specifies the array dimensions as a sequence of scalar dimensions:

       y = ones(d1,d2,...,dn).

The resulting array has the given dimensions, and is filled with all ones. The type of `y` is `float`, a 32-bit floating point array. To get arrays of other types, use the typecast functions (e.g., `uint8`, `int8`, etc.).

The second syntax specifies the array dimensions as a vector, where each element in the vector specifies a dimension length:

       y = ones([d1,d2,...,dn]).

This syntax is more convenient for calling `ones` using a variable for the argument. In both cases, specifying only one dimension results in a square matrix output.

# Example

The following examples demonstrate generation of some arrays of ones using the first form.

    --> ones(2,3,2)

    ans =

    (:,:,1) =
     1 1 1
     1 1 1

    (:,:,2) =
     1 1 1
     1 1 1

    --> ones(1,3)

    ans =
     1 1 1

The same expressions, using the second form.

    --> ones([2,6])

    ans =
     1 1 1 1 1 1
     1 1 1 1 1 1

    --> ones([1,3])

    ans =
     1 1 1

Finally, an example of using the type casting function `uint16` to generate an array of 16-bit unsigned integers with a value of 1.

    --> uint16(ones(3))

    ans =
     1 1 1
     1 1 1
     1 1 1