How to pull out rows with a unique value in a specified column?

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Louisa Thomas
Louisa Thomas le 24 Oct 2017
Réponse apportée : Alan Weiss le 24 Oct 2017
I have a matrix variable called 'summed' which is 1330 x 2.
I want to pull out every row of 'summed' that has a unique value in the second column, and store these in a new variable, called 'uniqueVals'
I tried the following line of code:
uniqueVals = summed(:,2) == unique;
Which didn't work, and I am unsure how I should go about doing this?
  1 commentaire
per isakson
per isakson le 24 Oct 2017
  • Are summed floating point numbers?
  • Which release of Matlab do you use?

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Alan Weiss
Alan Weiss le 24 Oct 2017
Perhaps the following works:
[C,ia] = unique(summed(:,2));
uniqueVals = summed(ia,:);
Alan Weiss
MATLAB mathematical toolbox documentation

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Louisa Thomas
Louisa Thomas le 24 Oct 2017
the values in summed are integers, and I'm using MATLAB R2015b

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