MATLAB: Value swapping

find

Hello,

I have a matrix

x =

i want to search all 7 and shift to the first column and the corresponding value to the other coloumn, like

x =

Best Answer

x(x(:,2)==7,:) = fliplr(x(x(:,2)==7,:))

Related Solutions

MATLAB: Swapping Blocks in a Matrix

>> x = [1,2,3,4,5;6,7,8,9,10;11,12,13,14,15]
x =
    1    2    3    4    5
    6    7    8    9   10
   11   12   13   14   15
>> x([1,4,11,14]) = x([11,14,1,4])
x =
    9   10    3    4    5
    6    7    8    1    2
   11   12   13   14   15

You can easily generate those linear indices with sub2ind.

MATLAB: Matlab indexing and swapping

This isn't going to work like you hoped. If you delete an element from the array with this line:

    x(n) = [];

Then there are no longer len elements in the x array, so this will eventually yield an error because i will be out of bounds for the shortened length of x (i.e., len is no longer the actual length of x):

    for i = 1:len
        if x(i) < minval

So first thing you need to do is rewrite your code to fix this problem, then we can worry about how to swap elements (if that step still remains in your fixed code).

Best Answer

Related Solutions

MATLAB: Swapping Blocks in a Matrix

MATLAB: Matlab indexing and swapping

Related Question