How can I delete duplicates in an array, with exceptions?

2013 11 12
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更新时间：2013 11 12
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I have an array which I would like to delete only the 2nd duplicate of a set in an array e.g:
'B1(46)'
'B13(201)'
'B14(201)'
'B14(201)' - delete
'B1(52)'
'B2(52)'
'B2(52)' - delete
'B5(124)'
'B6(124)'
'B6(124)' - delete
'B13(201)'
'B14(201)'
'B14(201)' - delete
My current script (below) will delete all duplicates of 'B14(201)', which is not what I want:
wd=event; % with duplicates
[~,idx]=unique(strcat(wd()),'stable');
newevent=wd(idx); %without duplicates
Thanks

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Andrei Bobrov
Andrei Bobrov 2013-11-12
编辑：Andrei Bobrov 2013-11-12

0 个投票

A - your array:
[ii,ii,ii] = unique(A);
out = A([true;diff(ii)~=0]);

7 个评论
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David Bridges
David Bridges 2013-11-12
Thanks Andrei, but I get the following error:
Error using vertcat
Dimensions of matrices being concatenated are not consistent.
Error in MADSCRIPT3 (line 79)
out = A([true;diff(ii)~=0]);
Im not sure why...
David Bridges
David Bridges 2013-11-12
Ok I added the following and get no error, although it does not appear to delete duplicates?
A=strvcat(event)
[ii,ii,ii] = unique(A);
out = A([true;diff(ii)~=0]);
Andrei Bobrov
Andrei Bobrov 2013-11-12
What is your array (A in my case)?
My solution work for case:
>> A = {'B1(46)'
'B13(201)'
'B14(201)'
'B14(201)'
'B1(52)'
'B2(52)'
'B2(52)'
'B5(124)'
'B6(124)'
'B6(124)'
'B13(201)'
'B14(201)'
'B14(201)'};
>> [ii,ii,ii] = unique(A);
out = A([true;diff(ii)~=0])
out =
'B1(46)'
'B13(201)'
'B14(201)'
'B1(52)'
'B2(52)'
'B5(124)'
'B6(124)'
'B13(201)'
'B14(201)'
>>
David Bridges
David Bridges 2013-11-12
Ok the 'event' or 'A' variable is a 1x169 cell array. The strvcat function turns it into a 169x8 char array...
Andrei Bobrov
Andrei Bobrov 2013-11-12
编辑：Andrei Bobrov 2013-11-12
With my variant of array - working?
David Bridges
David Bridges 2013-11-12
This works now, thank you very much.
Zeeshan
Zeeshan 2013-11-12
Hi Andrei, I have sent you an email on your email address. Would me much appreciated if I can get a reply regards.

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