# ones

matrix made of ones

### Syntax

y=ones(m1,m2,...) y=ones(x) y=ones()

### Arguments

- x,y
matrices

- m1, m2,..
integers

- type
optional character string: 'double', 'boolean', 'int8', 'uint8', 'int16', 'uint16', 'int32', 'uint32', 'int64', or 'uint64'.

### Description

Returns a matrix made of ones. By default the returned matrix is of double precision floating point type but a given type can be precised in the typeargument.

- ones(m1,m2,..,mn)
creates a

`(m1,m2,..,mn)`

matrix full of ones.- ones(m1,m2,..,mn,type)
returns a

`(m1,m2,..,mn)`

matrix made of ones with type given by`type`

. In the case of boolean type the matrix is filled with`%T`

value.- ones(x)
returns a matrix full of ones with the same size as

`x`

.- ones(x,type)
returns a matrix full of ones with the same size as

`x`

and type given by`type`

. In the case of boolean type the matrix is filled with`%T`

value.- ones(x)
is also valid for

`x`

a`syslin`

list.

### Remarks

Note that

`ones(3)`

is`ones(a)`

with`a=3`

i.e it is NOT a 3x3 matrix!ones() is equivalent to ones(1,1).

`ones(3,-3)`

and`ones(-3,-3)`

both return an empty matrix.

`repmat(1, sizes)` can be used to generate an array of ones with
`sizes=[m1 m2 ..]` given as a vector. |

### Examples

ones(3) ones(3,3) ones(3,3,"uint8") ones(3,3,"boolean") ones(2,3,2) repmat(1, [2 4 2])

Report an issue | ||

<< ndgrid | Matrix generation | perms >> |