simple operations

Hi, I'm seeking the way to erase repeated value into vector, like this:

a = [0 0 1 2 2 2 7];
b = something(a);
b = [0 1 2 7]

thx

Answer 1

[Dr. Seis]

a = [0 0 1 2 2 2 7];
b = unique(a);
b = [0 1 2 7]