MATLAB: How to find unique value in serial order?

MATLAB

I have a matrix
 p = [90 90 -45 0 0 45 45 0 -45];
i want unique values in serial order from right side
 q = [90 -45 0 45 0 -45];
Means from right side first value is -45, second is 0, third is 45…etc
I want repeated unique number according to serial from RHS.
Means sort repeated values.

Best Answer

Does this do what you want?
p = [90 90 -45 0 0 45 45 0 -45];
idx = [true diff(p)~=0];
q = p(idx);
If not, can you give another example or two that illustrates the rule?
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