sort a matrix depending on first row
Afficher commentaires plus anciens
I have a matrix B
>> B
B =
5.0000 1.0000 6.0000 3.0000
0.6076 0.4943 0.1097 0.4754
-0.1178 -1.4831 1.1287 1.1741
0.6992 -1.0203 -0.2900 0.1269
0.2696 -0.4470 1.2616 -0.6568
depending on the first rwo values I want to sort the data. i.e., my result should look like this
>>
ans=
1.0000 3.0000 5.0000 6.0000
0.4943 0.4754 0.6076 0.1097
-1.4831 1.1741 -0.1178 1.1287
-1.0203 0.1269 0.6992 -0.2900
-0.4470 -0.6568 0.2696 1.2616
How to do this?
Réponses (2)
Andrei Bobrov
le 17 Sep 2011
Modifié(e) : Stephen23
le 11 Avr 2019
out = sortrows(B.',1).'
variant
[~,inx]=sort(B(1,:));
out = B(:,inx);
3 commentaires
manoj saladi
le 11 Avr 2019
Hi,
Thank you very much, solved my problem
Barrett Durtschi
le 3 Août 2020
Thank you for this answer! What would I change in the statement if I wanted the first four row values?
Bruno Luong
le 3 Août 2020
out = sortrows(B(1:4,:).',1).'
TAB
le 17 Sep 2011
[mat inx]=sort(b(1,:));
SortedMat=[b(:,inx(1)),b(:,inx(2)),b(:,inx(3)),b(:,inx(4))];
Catégories
En savoir plus sur Shifting and Sorting Matrices dans Centre d'aide et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!