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Scilab Help >> Elementary Functions > Matrix generation > ones

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])

See also

  • eye — identity matrix
  • zeros — null matrix
  • repmat — Replicate and tile an array
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Last updated:
Tue Feb 25 08:49:19 CET 2020