Chage elements of a matrix

Question

Berkay 2022-8-30

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https://ww2.mathworks.cn/matlabcentral/answers/1790740-chage-elements-of-a-matrix

回答： Chunru 2022-8-30

采纳的回答： Chunru

I have created a matrix filled with ones with this;

Matrix = ones(5,4)

And I want to change every second element of the matrix with random values how can I do it?

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Answer 1

Chunru 2022-8-30

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https://ww2.mathworks.cn/matlabcentral/answers/1790740-chage-elements-of-a-matrix#answer_1037680

在 MATLAB Online 中打开

Matrix = ones(5,4)
Matrix = 5×4
     1     1     1     1
     1     1     1     1
     1     1     1     1
     1     1     1     1
     1     1     1     1
n = numel(Matrix);
Matrix(1:2:n) = randn(size(1:2:n))
Matrix = 5×4
   -1.4989    1.0000   -0.9206    1.0000
    1.0000   -0.8921    1.0000    1.2853
    0.9458    1.0000    0.5612    1.0000
    1.0000   -0.4176    1.0000   -0.7999
   -0.3232    1.0000   -0.3478    1.0000