How to delete all repeat rows?

How to delete all repeat rows?

I mean all repeat rows, like :

A=

[0 4;

2 4;

0 4;

4 8;

3 4]

How to got new_A=

[2 4;

4 8;

3 4]

Answer 1

[Rik]

There is probably a more efficient way, but you can use unique() to get all first occurrences. Then you can use the second output to find all removed rows, which you can use as an input to setdiff.

A=[0 4;2 4;0 4;4 8;3 4;0 4];

[B,ind]=unique(A,'stable','rows');
ind=setdiff(1:size(A,1),ind);
B=setdiff(B,A(ind,:),'rows');

[Wang Jack]

Yes, I'm looking at the official menu [CIA, is] = unique (a, 'rows')

But I haven't got any clue yet..

[Rik]

I have added example code.

[Wang Jack]

Aaaaaawesome, thanks for the help!

[Rik]

Glad to be of help. If it solved your problem, please consider marking it as accepted answer. If not, feel free to comment with your remaining issues.