MATLAB: Rearrange matix in ascending order using one column as index!

rearrenge ascending order

Hallo! I have one matix with two columns where each value of column 1 correnponds to the value of the same row at column 2. I want to rearrange the matrix placing the items in column 1 in ascending order with its paired value of colymn 2.

example if i have a=[7 100;1 200;5 24,8;3 72] I want b=[1 200;3 72;5 24,8;7 100];

Best Answer

a=[7 100;1 200;5 248;3 72]
b=[1 200;3 72;5 248;7 100] ;
[val,idx] = sort(a(:,1)) ;
b = a(idx,:)

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MATLAB: How to rearrange row of a matrix based on column value

Try this:

[~, sortOrder] = sort(v(:,4), 'descend')
v2 = v(sortOrder,:)

MATLAB: Any tips to updating ‘for loop’ index!

check2nd_t=1;
for x=1:10
  %some code


  do_again = true;
  while do_again
      do_again = false;
      for y=1:10
        %if abv(x) >= abb(y)
        for z=1:10
          if abv(x) > abc(z)
            %done
            break;
          end
          if y==10 & z==10 & check2nd_t ~=2      %is it && would make any change!?
            check2nd_t=2;
            do_again = true;
            break;
            %***my main point, I want the y loop to repaet again***
            %some code
          end
        end
        if do_again; break; end
        %some code
      end
  end
end

Best Answer

Related Solutions

MATLAB: How to rearrange row of a matrix based on column value

MATLAB: Any tips to updating ‘for loop’ index!

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