清空筛选条件
清空筛选条件

How to sort or rearrange a column with respect to the other column?!

14 次查看（过去 30 天）
Mariam Sheha
Mariam Sheha 2016-6-17
评论： Mariam Sheha 2016-6-17
Hello Everybody;
wish you are all doing well;
if i have a data of two columns and i want to sort one of the columns in a descending order and also keep the other column fixed and likened with the changed one, how can i do that?! assuming that column 1 is the ID of column two
sample data:
241 5
1245 4
684 4
806 4
674 3
Appreciating your help ;

请先登录，再回答此问题。

采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2016-6-17
编辑：Azzi Abdelmalek 2016-6-17
Use sortrows function. For example
A=[241 5;1245 4;684 4;806 4;674 3]
B=sortrows(A,2)
% Or by descending order
B=sortrows(A,-2)
  5 个评论
显示 3更早的评论
Guillaume
Guillaume 2016-6-17
Please, read the documentation of sortrows. You can sort according to whichever column and whichever direction you wish.
The documentation contains lots of useful information!

请先登录，再进行评论。

更多回答（1 个）

Shameer Parmar
Shameer Parmar 2016-6-17
编辑：Shameer Parmar 2016-6-17
Hello Mariam,
For your given sample data:
A =
241 5
1245 4
684 4
806 4
674 3
use following code:
A = [241, 5; 1245, 4; 684, 4; 806, 4; 674, 3];
B(:,1) = sort(A(:,1),'descend');
for i=1:length(A)
B(i,2)=A(find(ismember(A(:,1),B(i))),2);
end
B
OutPut will be like in '*descending*' order
B =
1245 4
806 4
684 4
674 3
241 5
  3 个评论
显示 1更早的评论
Guillaume
Guillaume 2016-6-17
Both sortrows and sort allows you to specify the direction. I recommend using sortrows as it's more suited to what you want.
If you were to use sort, I would use the 2nd return value to reorder the other columns rather than a loop and ismember:
[B(:, 1), order] = sort(A(:, 1), 'descend');
B(:, 2) = A(order, 2);
As said, sortrows as per Azzi's answer is better.

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