Deleting duplicate values in matrix
显示 更早的评论
I have a dataset in which i have duplicate vaues(same values),i want to delete it as
S={
'' 'c1' 'c2' 'c3'
'p-a' 'pso' 'mpso' 'pso'
'p-a' 'pso' 'mpso' 'pso'
'p-a' 'pso' 'mpso' 'pso'
'k' 'spsp' 'pso' 'mpso'
'y-b' 'pso' 'pso' 'spso'
'y-b' 'pso' 'pso' 'spso'}
i need output as
out={
'p-a' 'pso' 'mpso' 'pso'
'k' 'spsp' 'pso' 'mpso'
'y-b' 'pso' 'pso' 'spso'}
please help
采纳的回答
Oleg Komarov
2012-8-27
[trash,idx] = unique(S(:,1),'stable');
S(idx,:)
Note that only the first column is considered to be the key.
6 个评论
kash
2012-8-27
Honglei Chen
2012-8-27
编辑：Honglei Chen
2012-8-27
If it does not solve your issue, please do not accept an answer. The error you see could be due to you are using an older version of MATLAB that does not support 'stable' option.
kash
2012-8-27
Omit the "stable", kash. And please be so kind to answer my question: Why does the first row disappear in the output? It is a unique line, so it should be kept according to your explanations.
If using the first row is not enough for your problem, take the time to explain such details. Try unique(S, 'rows') instead.
You've asked 220 questions now and still accept an answer, which does not solve your problem? Surprising. Again I suggest to read, consider and respect the forum rules, which are explained e.g. here: http://www.mathworks.com/matlabcentral/about/answers/
Andrei Bobrov
2012-8-27
[trash,idx] = unique(S(:,1),'first');
out = S(sort(idx),:);
kash
2012-8-29
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Particle Swarm 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
