4.10: Special 2D Arrays

Fundamentals of MATLAB Programming · LibreTexts

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    MATLAB includes built-in functions that create common matrices quickly. These are very useful when you need to initialize data.

    Function

    Description

    Example

    zeros(n)

    Creates an n-by-n matrix of zeros

    zeros(4)

    zeros(m,n)

    Creates an m-by-n matrix of zeros

    zeros(2,4)

    ones(n)

    Creates an n-by-n matrix of ones

    ones(4)

    ones(m,n)

    Creates an m-by-n matrix of ones

    ones(2,4)

    eye(n)

    Creates an n-by-n identity matrix

    eye(3)

    eye(m,n)

    Creates an m-by-n identity-style matrix

    eye(2,3)
    Example \(\PageIndex{1}\)

    Building a few special arrays.

    mat_1 = zeros(4)

mat_2 =zeros(2,4)

mat_3 =ones(4)

mat_4 =ones(2,4)

mat_5 =eye(3)

mat_6 =eye(2,3)

    Solution

    mat_1 =

   0   0   0   0
   0   0   0   0
   0   0   0   0
   0   0   0   0

mat_2 =

   0   0   0   0
   0   0   0   0

mat_3 =

   1   1   1   1
   1   1   1   1
   1   1   1   1
   1   1   1   1

mat_4 =

   1   1   1   1
   1   1   1   1

mat_5 =

Diagonal Matrix

   1   0   0
   0   1   0
   0   0   1

mat_6 =

Diagonal Matrix

   1   0   0
   0   1   0

    This page titled 4.10: Special 2D Arrays was last modified on Tue, 30 Jun 2026 02:11:57 GMT and is shared under a CC BY-NC-SA license and was authored, remixed, and/or curated by Zara Noroozi.