How do I find local minimums in data?

Question

Mathematica easily allows you to use FindPeaks to find local maxima in your data is there any equivalent function for finding local minima?

Yes: FindPeaks[-data] would do that. – Jens Mar 18 '15 at 22:56 — Jens, Mar 18 '15 at 22:56

score 4 · Accepted Answer · answered Mar 18 '15 at 23:05

4

data = {2, 1, 3, 5, 6, 6, 4, 3, 2, 4, 7, 3, 2, 4, 2, 2, 1};
valleys = {#,-#2} & @@@ FindPeaks[-data]
(* {{2, 1}, {9, 2}, {13, 2}, {17, 1}} *)

ListLinePlot[data, Epilog -> {Red, PointSize[Large], Point[valleys]}]

enter image description here

answered Mar 18 '15 at 23:05

kglr

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How do I find local minimums in data?

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