How to specifically select columns from a matrix?
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Dear All,
For a given 2 columns matrix A. For example
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/197181/image.png)
Can I extract the first 3 elements in the 2nd columns and the 4th and 5th elements in the first column by one commend?
I tried the following way but failed: First, I defined an array as follows,
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/197182/image.png)
Then I did A(:,r) and it did not work.
Thanks a lot. Bei Gou
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