How can I remove a duplicate set values?

I have an array of

d = [100 50 100 100 50 100 100 50 100 100 50 100 100 50 100 100 50 100];

the result that I want is

d = [100 50 100]

I already tried using unique(d) but the result shows [50 100] How can I remove the duplicate values?

Thanks

[Jan]

Please take the time to explain, which operation you want. Why is the output [100, 50, 100]? It could be [100,50,100,100,50,100] also. How do the inputs look like in general?

[Rika Citra]

I am sorry, d= [100 50 100 100 50 100 100 50 100 100 50 100 100 50 100 100 50 100];is an input from data reading (I already done that). The data is from the simulator machine, I don't know why the data from the machine came out like that. But, the actual value of the data is [100 50 100]. So, that's why I only need one set of [100 50 100]. I already tried with unique (d) but it does not worked.

[Jan]

Do you know the length of the sequence or does the determination of the period belongs to the problem?

Answer 1

[Ameer Hamza]

For a general case, where you don't already know the number of elements being repeated use the following

d(1:seqperiod(d))
ans =
 100    50   100

Note: This will require Signal Processing Toolbox.

Answer 2

[per isakson]

I guess

• d is a row vector of whole numbers
• d consists of multiple sets of three numbers
• you search unique sets of three numbers

d = [100 50 100 100 50 100 100 50 100 100 50 100 100 50 100 100 50 100];
m = reshape( d, 3,[] );
m = permute( m, [2,1] );
unique( m, 'rows' )

returns

ans =
   100    50   100

Answer 3

[Image Analyst]

Try this:

d = d(1:3)