FindPeaks

FindPeaks[data]

gives positions and values of the detected peaks in data.

FindPeaks[data,σ]

finds peaks that survive Gaussian blurring up to scale σ.

FindPeaks[data,σ,s]

finds peaks with minimum sharpness s.

FindPeaks[data,σ,s,t]

finds only peaks with values greater than t.

FindPeaks[data,σ,{s,σs},{t,σt}]

uses different scales for thresholding sharpness and value.

Details and Options

  • FindPeaks finds local maxima using the given constraints, returning the result as {{x1,f1},{x2,f2},…}.
  • Input data can be of one of the following forms:
  • {y1,y2,…}a list of values
    TimeSeries[…]regularly sampled time series object
    EventSeries[…]regularly sampled event series object
  • FindPeaks[data] automatically chooses constraints to return a set of peaks.
  • FindPeaks[data,0,0,-∞] returns all the peaks.
  • FindPeaks[data,σ,s,t] is equivalent to FindPeaks[data,σ,{s,σ},{t,0}].
  • The following options can be given:
  • InterpolationOrderAutomaticspline interpolation order of up to order 3
    Padding"Reversed"padding scheme to use

Examples

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Basic Examples  (1)

Find position and height of dominant peaks in a list:

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Visualize list and the detected peaks:

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Scope  (12)

Options  (3)

Applications  (3)

See Also

PeakDetect  FindMaximum  FindArgMax  FindMinimum  MaxDetect  MaximalBy  EstimatedBackground  Fourier

Introduced in 2014
(10.0)