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Re: Efficient unique/sum column(s)
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From: |
Andrei Bobrov |
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Subject: |
Re: Efficient unique/sum column(s) |
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Date: |
Wed, 5 Feb 2014 01:38:47 -0800 (PST) |
z = [x,y];
[a,b,c1] = unique(z,'rows','first');
[~,ii] = sort(b);
[~,iii] = sort(ii);
out = [a(ii,:), accumarray(iii(c1),c)];
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