  # matrix operations | one () function

NumPy | Python Methods and Functions

`numpy.matlib.ones()` — another function to do matrix operations in numpy. Returns a matrix of the given shape and type, filled with ones.

Syntax: numpy.matlib.ones (shape, dtype = None, order = `C`)

Parameters:
shape: [int, int] Number of rows and columns in the output matrix.If shape has length one ie (N, ), or is a scalar N, out becomes a single row matrix of shape (1, N).
dtype: [optional] Desired output data-type.
order: Whether to store multi-dimensional data in row-major (C-style) or column-major (Fortran-style) order in memory.

Return: Matrix of ones of given shape, dtype, and order.

Code # 1:

 ` # Python program explaining ` ` # numpy.matlib.ones () function ` ` `  ` # import matrix library from numpy ` ` import ` ` numpy as geek ` ` import ` ` numpy.matlib `   ` # desired 3 x 4 output matrix ` ` out_mat ` ` = ` ` geek.matlib.ones ((` ` 3 ` `, ` ` 4 ` `)) ` ` print ` ` (` ` "Output matrix:" ` `, out_mat) `

Output:

` Output matrix: Output matrix: [[1. 1. 1. 1.] [1. 1. 1. 1.] [1. 1. 1. 1.]] `

Code # 2:

 ` # Python program explaining ` ` # numpy.matlib.ones () function `   ` # import numpy library and matrix ` ` import ` ` numpy as geek ` ` import ` ` numpy.matlib `   ` # desired 1 x 5 output matrix ` ` out_mat ` ` = ` ` geek.matlib.ones (shape ` ` = ` ` 5 ` `, dtype ` ` = ` ` int ` `) ` ` print ` ` (` ` "Output ma trix: "` `, out_mat) `

Output:

` Output matrix: [[1 1 1 1 1]] `