Deleting sequence of igual values from a matrix

Hello there,

I have a matrix with a sequence of numbers, as it referes to a conjunction of points coordenates, most of times this values became monotonous in one of the lines, I want to discart every point that do not change em both lines 1 and 2 at the same time. Example:

 [0 0 0 1 1 1 2 2 2 3 3 3,

 0 1 2 2 3 4 5 6 7 8 9 10]

I just want to select

[0 1 2 3,

0 2 5 8]

Answer 1

[Jose Marques]

Hello Felipe. Try this:

A =  [0 0 0 1 1 1 2 2 2 3 3 3,
 0 1 2 2 3 4 5 6 7 8 9 10];
[C, ia, ic] = unique(A(1,:));
C = vertcat(C,A(2,ia));

The function "unique" returns the unique values in a array.

[Felipe vielmo]

Exactly the answer that I needed, thank you.