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

Question

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?

Answer 1

Perhaps the following works:

[C,ia] = unique(summed(:,2));
uniqueVals = summed(ia,:);

Alan Weiss

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