Delete column from matrix with condition?

Question

Thouraya Aouled Messaoud 2018-11-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/429115-delete-column-from-matrix-with-condition

评论： Thouraya Aouled Messaoud 2018-11-10

Hi,

I am coding the following code:

ranking = [1 4 2 3];
Y = [ 1 2 3 4; 6 5 4 3; 1 2 3 4];
r=1;
n=2;
k=length(ranking);
for i=1:k
    while r<n
    if (ranking(i)== min(ranking))
      Z(:,i)=Y(:,i);
      ranking(i)=max (ranking);
      r=r+1;
    else
      Z(:,i)=[];  
    end
    break
    end
end
display(Z)
ranking

My code aims to create a new matrix "Z" only containing columns with highest ranking from matrix "Y"(ranking(1) and ranking(2) are supposed as most important as we chose "n=2"). So the final matrix "Z" must look like this:

Z=[1 3; 6 4; 1 3];

When i run my code i am not getting this result instead i got hte following output:

Z= [1 3 3; 6 4 4; 1 3 3];

I am missing something wrong in my code.

Any help please?