read columns from array

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Henry Buck 2015-8-24

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https://ww2.mathworks.cn/matlabcentral/answers/235596-read-columns-from-array

回答： senthil kumar 2015-8-27

Hi there, I need some help of solving that issue: I have 5 different voltage values that change every single tick time - that mean every single moment. I need to sort them and after they been sorted I want to go to another matrix(like this one at the bottom) and to pull out(read) specific column from it. That mechanism change every single states/moment. How can I do this ?

The Matrix look like(and could be greater...):

   0     0     1     1     1
   1     1     0     0     1
   0     1     0     1     0
   1     0     1     0     0

Thanks, Henry

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Jon 2015-8-24

在 MATLAB Online 中打开

You should provide an example since your question is ambiguous. You say you have 5 values at each time, yet your example matrix has no 5-column or 5-row entries.

Look at sort() and sortrows() for sorting. For pulling out the column that you want, type

result = Matrix(:,col_I_want);

If you want to pull a row out, use

result = Matrix(row_I_want,:);

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