construct vectors if cycle

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joo
joo 2012-10-3
hello!
i need to construct vectors xx and yy. The problem is that at each cycle the past xx and yy is deleted but i want the opposite. i want them to keep the past information and grow at each cycle. what can i do?
i appreciate any help. thank you very much.

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回答（1 个）

Walter Roberson
Walter Roberson 2012-10-3
Before the loop,
xx = [];
yy = [];
Then in the loop, change the xx and yy statements to
xx = [xx, x(iPeaks1:iPeaks2)];
yy = [yy, y(iPeaks1:iPeaks2)];

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