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a problem with unique command

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Mnr
Mnr 2016-4-4
编辑： Walter Roberson 2016-4-5
Hello all,
I have an mx1 vector A, that is ordered in an ascending manner. I would like to find unique elements of this vector, however, by using "unique" command, I am getting the same output as A. Can anybody tell me how I can resolve this issue? I think it has to be done with matlab precision, but I do not know how to fix it.
Thanks!
  2 个评论
James Tursa
James Tursa 2016-4-4
Please post a short example showing A and what you want for output, and how you are currently using unique.
Mnr
Mnr 2016-4-4
编辑：Walter Roberson 2016-4-5
when I use "format long"
A=[1.414213562645795
1.414213562645985
1.414213562645985
1.414213562646871
1.414213562646871
1.553773974242559
1.553773974242559
1.553773974242644]
and I use unique(A), that's why I get the same output as A, while I need matlab to consider A as
[1.414
1.414
1.414
1.414
1.414
1.553
1.553
1.553]
so that the output to unique(A) be [1.414 1.553]

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采纳的回答

Steven Lord
Steven Lord 2016-4-4
Use uniquetol with an appropriate tolerance or discretize your data.

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