selecting unique rows

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kash
kash 2012-1-18
I have an matrix of 6 columns,all columns have repeated numbers,now i want to select only unique values of that matrix ,please help

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Andrei Bobrov
Andrei Bobrov 2012-1-18
EDIT [23:27(UTC+4) 18.01.2012]
a = [1 2 7 8 9 0
2 2 71 2 4 1];
out0 = a(all(diff(sort(a,2),1,2) > 1e4*eps,2),:)
out1 = sortrows(out0);
loc = [true;all(diff(out1,1,1),2)];
out = out1(loc,:);
  1 个评论
kash
kash 2012-1-18
andrei am not gtting exact result plz look at my file and result
http://www.sendspace.com/file/knqbjv
every column has same values,,i nees only unique values in every column

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更多回答（2 个）

TAB
TAB 2012-1-18
Type
>> doc unique
on your command window
Wayne King
Wayne King 2012-1-18
C = unique(A,'rows');
Selects the unique rows of the matrix A in sorted order. Is that what you mean?
  6 个评论
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kash
kash 2012-1-18
i my matrix my first column has repeated values
so
1 2 7 8 9 0
2 2 71 2 4 1
now 2nd column has repeating values
si i need as
1 2 7 8 9 0
like this i have 32000 rows and 6 columns
Andrei Bobrov
Andrei Bobrov 2012-1-18
a = [1 2 7 8 9 0
2 2 71 2 4 1];
out = a(all(diff(sort(a,2),1,2) > 1e4*eps,2),:)

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