I have X vector and Y vector. I have plotted graph. Now I sorted out some peak values (from Y). Stored in pks. Now, corresponding to these peaks values(pks), how I can find its corresponding X values?

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Sagar Dhage
Sagar Dhage 2014-7-1
评论： Sagar Dhage 2014-7-2
I have X vector and Y vector. I have plotted graph. Now I sorted out some peak values (from Y). Stored in pks. Now, corresponding to these peaks values(pks), how I can find its corresponding X values?

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Sara
Sara 2014-7-1
If there is a biunivocal correspondence between X and Y (i.e. to each value of X corresponds only one value of Y and vice versa), then:
xpks = zeros(numel(pks),1);
for i = 1:numel(pks)
xpks(i) = pks(find(Y == pks(i),1));
end

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