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Simple operation with vectors

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aurc89
aurc89 2015-2-23
评论： aurc89 2015-2-23
I have two vectors, x and y, and I plot the function y=f(x) with the command plot(x,y). I need to know what is the value of x corresponding to the maximum value of y. For example if
x=[1.2 1.4 1.6 2.5 3.7]
and
y=[3.2 4.8 5.6 4.4 3.1],
then I have to obtain 1.6, since the third element of x corresponds to the maximum value of y. How can I implement this command? Thanks

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W. Owen Brimijoin
W. Owen Brimijoin 2015-2-23
Location of the max y values as the index into x:
x(y==max(y))

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