How to find the index of the first minimum element

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Chamira Wickramasinghe
回答： Sean de Wolski 2015-3-19
Hello,
I have a 1X6 matrix.
y = [682.8333 399.8160 34.2270 46.1800 107.7035 ];
I wanna find the first minimum element (not the minimum value the first minimum value which means the first value that has two greater values on left and right sides) (the first negative peak)
In here it must be 34.2270 ( I know it can be found by "out = y(find(diff(y)>0,1,'first'));" )
And I wanna know what the index of that element.
In here it must be 3.
Thank you.

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回答（1 个）

Sean de Wolski
Sean de Wolski 2015-3-19
[~,idx] = min(y)

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