sorting a matrix in descending order

1 vue (au cours des 30 derniers jours)
Rabeya
Rabeya le 21 Avr 2012
Commenté : the cyclist le 18 Oct 2013
I have a matrix
group =
0 0 0 1
0 1 0 0
0 0 1 0
0 1 0 0
0 0 0 1
0 0 1 0
0 0 1 0
0 1 0 0
0 0 0 1
0 1 0 0
1 0 0 0
0 1 0 0
if I want to sort in ascending order I can use
sortrows(group)
ans =
0 0 0 1
0 0 0 1
0 0 0 1
0 0 1 0
0 0 1 0
0 0 1 0
0 1 0 0
0 1 0 0
0 1 0 0
0 1 0 0
0 1 0 0
1 0 0 0
but I want to sort in descending order. What to do?

Réponse acceptée

the cyclist
the cyclist le 21 Avr 2012
You can use a second input argument. By omitting it, you have effectively used
sortrows(group,[1 2 3 4])
for the ascending case. I believe what you want for the descending case is
sortrows(group,[-1 -2 -3 -4])
but you should verify that the result.

Plus de réponses (1)

bym
bym le 21 Avr 2012
sort(group,1,'descend')
  3 commentaires
Asawari
Asawari le 18 Oct 2013
Can I use this descend command to arrange any array or matrix in descending order?I am using mesh command to create a curve.Mesh command creates origin of the curve between X-Y plane by default.I want to change the origin from X-Y plane to Y-Z plane and X axis I want to arrange in descending order,I am stuck here,can anyone help?
the cyclist
the cyclist le 18 Oct 2013
I suggest you make a new question, with more detail and maybe a small example. Questions buried in comments don't get seen as much.

Connectez-vous pour commenter.

Catégories

En savoir plus sur Shifting and Sorting Matrices dans Help Center et File Exchange

Tags

Produits

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by