sorting a matrix in descending order

1 次查看（过去 30 天）
Rabeya
Rabeya 2012-4-21
评论： the cyclist 2013-10-18
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?

请先登录，再回答此问题。

采纳的回答

the cyclist
the cyclist 2012-4-21
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.

更多回答（1 个）

bym
bym 2012-4-21
sort(group,1,'descend')
  3 个评论
显示 1更早的评论
Asawari
Asawari 2013-10-18
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 2013-10-18
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.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Shifting and Sorting Matrices 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by