how to create zero column matric and row in beginning of the matrix

Question

sanket neharkar 2022-11-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1852408-how-to-create-zero-column-matric-and-row-in-beginning-of-the-matrix

回答： Kevin Holly 2022-11-16

采纳的回答： Kevin Holly

i got a 6x6 matrix but now i have to make it 8x8 where the first two rows and column should be zero

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Answer 1

Kevin Holly 2022-11-16

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https://ww2.mathworks.cn/matlabcentral/answers/1852408-how-to-create-zero-column-matric-and-row-in-beginning-of-the-matrix#answer_1101298

在 MATLAB Online 中打开

m = rand(6)
m = 6×6
    0.0069    0.8937    0.6615    0.7778    0.8702    0.0865
    0.6157    0.2651    0.6701    0.6399    0.4879    0.9692
    0.0580    0.9024    0.5732    0.7527    0.4914    0.0875
    0.0193    0.1431    0.6512    0.3485    0.3430    0.5308
    0.1633    0.5451    0.9625    0.5715    0.0338    0.7193
    0.4034    0.8196    0.9789    0.4078    0.5132    0.0587
new = [zeros(8,2) [zeros(2,6);m]]
new = 8×8
         0         0         0         0         0         0         0         0
         0         0         0         0         0         0         0         0
         0         0    0.0069    0.8937    0.6615    0.7778    0.8702    0.0865
         0         0    0.6157    0.2651    0.6701    0.6399    0.4879    0.9692
         0         0    0.0580    0.9024    0.5732    0.7527    0.4914    0.0875
         0         0    0.0193    0.1431    0.6512    0.3485    0.3430    0.5308
         0         0    0.1633    0.5451    0.9625    0.5715    0.0338    0.7193
         0         0    0.4034    0.8196    0.9789    0.4078    0.5132    0.0587