How to delete an repeated values in matrix?

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Matlab111
Matlab111 2015-2-9
编辑： Stephen23 2015-2-9
I have matrix like this, so how to delete repeated values in this case?
[a b]=[197.9040 11.6502 41.6502 41.3856 41.3856 0 197.9040
12.2180 51.2008 61.2008 104.3122 104.3122 0 12.2180];
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Jan
Jan 2015-2-9
Please post the wanted result also. Should the columns be unique? Or should all columns vanish, which appear more than once? Or do you mean the single elements?

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Stephen23
Stephen23 2015-2-9
编辑：Stephen23 2015-2-9
A = [197.9040, 11.6502, 41.6502, 41.3856, 41.3856, 0, 197.9040, 12.2180, 51.2008, 61.2008, 104.3122, 104.3122, 0, 12.2180];
>> A(sum(bsxfun(@(a,b)abs(a-b)<1e-6,A,A(:)))<2)
ans =
11.6502 41.6502 51.2008 61.2008
Because your values are floating point it is best to avoid using eq, unique and the like, which only work for exactly identical values . Instead I used a tolerance of 1e-6, and values closer than this tolerance are assumed to be the same. You can change the tolerance to suit your values.
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Matlab111
Matlab111 2015-2-9
编辑：Matlab111 2015-2-9
Stephen Cobeldick- ya i'm not getting sir, try this one
question:
c=[0.7893 0.8337 0.1479 0 0 0.1479 0.9993];
1.now i should delete the repeated values in that 'c'.
2.i should delete the values that is displayed before the zeros.
3.And finally i should delete zeros also.
Expected output:
d=[0.9993];
Stephen23
Stephen23 2015-2-9
编辑：Stephen23 2015-2-9
You original question, which my code above solves exactly, does not mention anything about removing values before any zeros. You are changing the requirements, which makes it difficult for us to help you.
It is considered polite to Accept answers that solve your original question. I have answered your other question, about removing leading values, here:
http://www.mathworks.com/matlabcentral/answers/176676-how-to-delete-particular-values-in-this-matrix

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更多回答（2 个）

Roger Stafford
Roger Stafford 2015-2-9
If x is your array with repetitions
[~,ia] = unique(x,'first','legacy');
x = x(sort(ia));
Andrei Bobrov
Andrei Bobrov 2015-2-9
编辑：Andrei Bobrov 2015-2-9
x = [197.9040 11.6502 41.6502 41.3856 41.3856 0 197.9040
12.2180 51.2008 61.2008 104.3122 104.3122 0 12.2180];
x = x(:);
[xx,~,c] = unique(x);
b = histc(c,1:max(c));
out = xx(b==1);

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