How can I get a row vector where a specific element found is located within a matrix?

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Erika
Erika 2012-10-10
I am trying to write a program that gives a row vector from a matrix that has the lowest element from a specific column. For example, say if I have the following,
A =
2009 8 2 4
2010 3 4 5
2011 6 9 1
2012 1 3 7
If I want to find the smallest value in column 3, which is 2, how do I get MATLAB to give the row where it is found, so that the result is
ans =
2009 8 2 4
I have been struggling with this for the past 2 days and I feel like because I've stared at this for so long I can't spot the problem. Can I get some help please?

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Andrei Bobrov
Andrei Bobrov 2012-10-10
编辑：Andrei Bobrov 2012-10-10
A =[
2009 8 2 4
2010 3 4 5
2011 6 9 1
2012 1 3 7];
[ii,ii] = min(A(:,3));
out = A(ii,:);
or
out = A(abs(A(:,3) - min(A(:,3))) < eps(100),:);

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Erika
Erika 2012-10-10
Thank you! I do have a question, however. Why are you using ii twice? What does this do that allows to get the row vector where a specific element found is located within a matrix? I ask this so that I know next time.
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