How can i get the x value for a chosen y value?

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nevin
nevin 2014-9-22
评论： nevin 2014-9-24
I've plot my spectrum with "plot (abs(wave));". I successfully got my Y max value with "maxY = max(abs(wave))". But now I want the X axis value that corresponds to my maximum Y value. Anybody can help? Thank you in advance!

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Iain
Iain 2014-9-22
[maxY index] = max(abs(wave));
index is either the X value, or something you can use to get the x values, eg,
x = 1:54:23423
correspondingX = x(index);

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