How can I create unique rows in a matrix?

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AK Nahin
AK Nahin 2020-10-27
编辑： Sudhakar Shinde 2020-10-27
I write a program and the output is like:
C =
0 0 0
3 6 6
4 5 6
4 6 5
5 4 6
5 5 5
5 6 4
6 3 6
6 4 5
6 5 4
6 6 3
Now I want to short rows and then delete unique rows. like there will be anly 4 5 6 not both 4 5 6 and 4 6 5. I think you get it. Thank you
  1 个评论
Sudhakar Shinde
Sudhakar Shinde 2020-10-27
编辑：Sudhakar Shinde 2020-10-27
Row with value- 4 5 6 and 4 6 5 are not duplicated these are two separate unique rows.
Example: A=[1 2 3; 3 4 5;1 2 3]; here 1st and 3rd row is duplicated. Now you can use 'unique' function to remove duplicate row.
[C,ia,ic] = unique(A,'rows');
uA = A(ia,:); %unigue array
https://www.mathworks.com/help/releases/R2019b/matlab/ref/unique.html#d117e1553957

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回答（1 个）

KSSV
KSSV 2020-10-27
编辑：KSSV 2020-10-27
A = [ 0 0 0
3 6 6
4 5 6
4 6 5
5 4 6
5 5 5
5 6 4
6 3 6
6 4 5
6 5 4
6 6 3] ;
[B,idx] = sort(A,2) ;
[C,ia,ib] = unique(B,'rows') ;
C

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