how can I delete some rows from a matrix

Question

momo 2024-4-5

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2103286-how-can-i-delete-some-rows-from-a-matrix

回答： Star Strider 2024-4-5

Hello,

I have a matrix with 3 col and many rows, I need to to create a new matrix with only odd romws numbers and delet the pair rows.

Someone have an idea how I can do this?

Thank you very much

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Answer 1

Star Strider 2024-4-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2103286-how-can-i-delete-some-rows-from-a-matrix#answer_1437036

在 MATLAB Online 中打开

This creates a new matrix with only the odd rows from the original matrix —

A = randi(9, 10,3)
A = 10x3
     4     5     3
     5     5     5
     7     3     9
     3     4     5
     5     7     8
     2     4     4
     3     4     3
     5     2     9
     2     5     3
     7     4     2
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Anew = A(1:2:end,:)
Anew = 5x3
     4     5     3
     7     3     9
     5     7     8
     3     4     3
     2     5     3
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