How to write code for diagonal matrix with specified input ?

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Ugashini Preetha 2022-5-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1728225-how-to-write-code-for-diagonal-matrix-with-specified-input

评论： Ugashini Preetha 2022-5-30

采纳的回答： KSSV

For n*n diagonal matrix :

n = input (' enter the order of the matrix : ');

s = input (' enter the value of s : ');

My question is if m = 3 and s = 1 then I should get my matrix as [a11] = 1 and remaining entries 0

if m = 3 and s = 2 then [a11] = 1 , [a22] = 1 and remaining entries o.

please help me out with this :)

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Walter Roberson 2022-5-27

We recommend that you do not dynamically create variable names such as a93829382.

Walter Roberson 2022-5-27

a(i, i) = 1

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采纳的回答

KSSV 2022-5-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1728225-how-to-write-code-for-diagonal-matrix-with-specified-input#answer_972580

在 MATLAB Online 中打开

n = 3 ;
s = 2 ;
iwant = zeros(n) ;
for i = 1:s
    iwant(i,i)=1 ;
end
iwant

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Walter Roberson 2022-5-30

You could initialize (1,1) and loop from 2

You could loop from 1 but change (1,1) after

You could loop and have an if to figure out what to do

Ugashini Preetha 2022-5-30

okay sir

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kainat rasheed 2022-5-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1728225-how-to-write-code-for-diagonal-matrix-with-specified-input#answer_972575

在 MATLAB Online 中打开

v = [1 2 3 4 5];

use this matrix to use specific numbers like this

after that write it as

D = diag(v)

v = [1 2 3 4 5];
D = diag(v)

run the code

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MATLAB Language Fundamentals Matrices and Arrays Operating on Diagonal Matrices

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