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From: Roger Stafford on 11 Mar 2010 17:52
gudny <gudnyg(a)gmail.com> wrote in message <ad9f2a23-be16-42f6-9e74-2afcff9cd825(a)i25g2000yqm.googlegroups.com>...
> Ok, so I have one solution: .....

You might try this. It uses only one call to 'unique'. The result is placed in B.

T = A.';
p = T(:,1)==1;
T(p,:) = 1-T(p,:); % Complement T rows that have 1 in first col.
[t,m,t] = unique(T,'rows'); % Reduce to unique T rows ('last')
B = A(:,sort(m)); % Reduce to corresponding cols. in A

Roger Stafford
From: gudny on 15 Mar 2010 06:41
On 11 Mrz., 23:52, "Roger Stafford"
<ellieandrogerxy...(a)mindspring.com.invalid> wrote:
> gudny<gud...(a)gmail.com> wrote in message <ad9f2a23-be16-42f6-9e74-2afcff9cd...(a)i25g2000yqm.googlegroups.com>...
> > Ok, so I have one solution: .....
>
>   You might try this.  It uses only one call to 'unique'.  The result is placed in B.
>
> T = A.';
> p = T(:,1)==1;
> T(p,:) = 1-T(p,:);   % Complement T rows that have 1 in first col.
> [t,m,t] = unique(T,'rows');   % Reduce to unique T rows ('last')
> B = A(:,sort(m));   % Reduce to corresponding cols. in A
>
> Roger Stafford

Thank you, that is if course a lot simpler and faster!
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