selecting unique rows

 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

Answer 1

[Andrei Bobrov]

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,:);

[kash]

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

Answer 2

[TAB]

Type

>> doc unique

on your command window

Answer 3

[Wayne King]

   C = unique(A,'rows');

Selects the unique rows of the matrix A in sorted order. Is that what you mean?

[kash]

no wayne not in sorted order,I have 6 columns in that i have many repeating numbers

ex

1 2 7 8 9 0

2 2 71 2 4 1

2 10 3 8 5 0

my matrix has many repeated numbers,1st,2nd 4th,6th,i need only unique values

[Wayne King]

then just unique(A)

[kash]

no wayne i tried this and did not get result

[Wayne King]

I think you need to make your use case clearer, with your above example, show us what you want the output to look like.

[kash]

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]

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),:)