How to retrieve unique columns in a matrix ?

42 次查看（过去 30 天）
Sai Teja Suggala
Sai Teja Suggala 2022-3-10
评论： Stephen23 2023-1-25
I would like to retrieve all the unique columns in a matrix..
If my matrix =
1 -1 1 1
1 1 1 1
2 1 1 1
UniqueColumns =
1 -1 1
1 1 1
2 1 1
Thank you before hand.

请先登录，再回答此问题。

采纳的回答

Stephen23
Stephen23 2022-3-10
编辑：Stephen23 2022-3-10
Ran in:
A = [1,-1,1,1;1,1,1,1;2,1,1,1];
B = unique(A.','rows','stable').'
B = 3×3
1 -1 1 1 1 1 2 1 1
  2 个评论
Laxmikant Sharma
Laxmikant Sharma 2023-1-24
编辑：Laxmikant Sharma 2023-1-24
What if you want the indeces too?
[B idx] = unique(A.', 'rows', 'stable').'
Not working!!!
Stephen23
Stephen23 2023-1-25
Ran in:
"What if you want the indeces too?"
A = [1,-1,1,1;1,1,1,1;2,1,1,1];
[B,idx] = unique(A.','rows','stable');
B = B.'
B = 3×3
1 -1 1 1 1 1 2 1 1
idx
idx = 3×1
1 2 3

请先登录，再进行评论。

更多回答（0 个）

类别

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

标签

产品


版本

R2021b

Community Treasure Hunt

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

Start Hunting!

Translated by