FreeMat: ZEROS Array of Zeros

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ZEROS Array of Zeros

Section: Array Generation and Manipulations

# Usage

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

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

The resulting array has the given dimensions, and is filled with all zeros. The type of `y` is `double`, a 64-bit floating point array. To get arrays of other types, use the typecast functions (e.g., `uint8`, `int8`, etc.). An alternative syntax is to use the following notation:

       y = zeros(d1,d2,...,dn,classname)

where `classname` is one of 'double', 'single', 'int8', 'uint8', 'int16', 'uint16', 'int32', 'uint32', 'int64', 'uint64', 'float', 'logical'.

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

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

or

       y = zeros([d1,d2,...,dn],classname).

This syntax is more convenient for calling `zeros` 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 zero arrays using the first form.

    --> zeros(2,3,2)

    ans =

    (:,:,1) =
     0 0 0
     0 0 0

    (:,:,2) =
     0 0 0
     0 0 0

    --> zeros(1,3)

    ans =
     0 0 0

The same expressions, using the second form.

    --> zeros([2,6])

    ans =
     0 0 0 0 0 0
     0 0 0 0 0 0

    --> zeros([1,3])

    ans =
     0 0 0

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

    --> uint16(zeros(3))

    ans =
     0 0 0
     0 0 0
     0 0 0

Here we use the second syntax where the class of the output is specified explicitly

    --> zeros(3,'int16')

    ans =
     0 0 0
     0 0 0
     0 0 0