Which function should I use here to group my matrix?

So let's say I have this matrix in Matlab.

A = [1 0 0;

2 0 0;

1.1 0 0;

2.1 0 0;

1.2 0 0;

2.2 0 0]

The thing is in my case, the values of row 1,3 and 5 are same and values of row 2,4 and 6 are same. And I want to write my new matrix like this.

B = [1 0 0;

1.1 0 0;

1.2 0 0;

2 0 0;

2.1 0 0;

2.2 0 0]

Someone can help me, what function should I use here. I beleive this is something related to group function, but didnt findout able to anything which I can use.

Appreciate your help,

Thank you :).

Answer 1

[madhan ravi]

Use sortrows()

  
A =   [1 0 0; 
       2 0 0; 
       1.1 0 0; 
       2.1 0 0;
       1.2 0 0;
       2.2 0 0]
   
  B = sortrows(A)

[Ketan Sahu]

Hey Madhav, Thanks for the answer.

Could you help me with this.

if I have this matrix.

A = [1 0 0;

-2 0 0;

1.1 0 0;

-2.1 0 0;

1.2 0 0;

-2.2 0 0]

and the answer I want is this,

B = [1 0 0;

1.1 0 0;

1.2 0 0;

-2 0 0;

-2.1 0 0;

-2.2 0 0].

If i use here the sort function, I will get this

B = sort(A)

B = [-2.2 0 0;

-2.1 0 0;

2 0 0;

1 0 0;

1.1 0 0;

1.2 0 0].

In my first question I was wrong with my interpretations.

[madhan ravi]

Anytime :)

[David Hill]

Try,

[~,x]=sortrows(abs(A));

B=A(x,:);

[Ketan Sahu]

Hello David Hill ,

Thank you for your answer. My code is working good.

Appereicate your efforts. :D