How can I remove a duplicate set values?

2018 5 19
3 个回答
更新时间：2021 8 20
2 次查看（30 天）

0 个投票

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

3 个评论
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Jan
Jan 2018-5-20
编辑：Jan 2018-5-20
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
Rika Citra 2018-5-20
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
Jan 2018-5-20
Do you know the length of the sequence or does the determination of the period belongs to the problem?

回答（3 个）

Ameer Hamza
Ameer Hamza 2018-5-20

2 个投票

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.
per isakson
per isakson 2018-5-20

1 个投票

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

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Rika Citra
Rika Citra
2018-5-19

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