how to sort from lowest to largest in matlab

Question

i have this number array

 A= [1  2   3   4
1   2   3   1
3   1   1   2
1   2   1   1
2   1   0   6
1   2   1   0]

i want to sort the 4th column from smallest to largest, and the corresponding rows will followed in their new position, something like this:

A =[1   2   1   0
1   2   3   1
1   2   1   1
3   1   1   2
1   2   3   4
2   1   0   6]

so the last row, become on the top because zero in the 4th column is the smallest number in 4th column, so how i will do that? thanks

Wouter Kuijsters · Answer 1 · 2015-03-01T14:31:56.200

3

You can do this:

[~,order] = sort(A(:,4));
A = A(order,:);

edited Mar 01 '15 at 14:31

answered Mar 01 '15 at 12:46

Wouter Kuijsters

i tried it but it give an error: Indexing cannot yield multiple results. – nobel Mar 01 '15 at 12:56
@nobel: The code is correct, I don't know what's wrong in your case. Maybe you have a variable `sort` shadowing the function `sort` – Daniel Mar 01 '15 at 13:07

score 3 · Accepted Answer · answered Mar 01 '15 at 12:50

3

This will do:

sortrows(A,columnNumber);

answered Mar 01 '15 at 12:50

Dandelion

2 Answers2