findpeaksInterp

版本 1.0.1 (3.6 KB) 作者: William Rose

Plug-in substitute for findpeaks(). Uses parabolas to interpolate to estimate "true" peaks.

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更新时间 2021/12/11

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findpeaksInterp(): Estimate peaks by parabolic interpolation. Finds the parabola passing through each peak found by findpeaks() and the two neighboring points. Returns the x,y coordinates of the vertices of the parabolas.

[pksInt,locsInt] = findpeaksInterp(data)
[pksInt,locsInt] = findpeaksInterp(data,Fs)
[pksInt,locsInt] = findpeaksInterp(___,Name,Value)

Returns pksInt =y-coordinates of peak estimates, and locsInt=x-coordinates of peak estimates. If positive scalar Fs is passed as an input, then the x-values are calculated using an assumed sampling rate of Fs, and it is assumed that the first point in vector data() is at x=0. Accepts and passes through up to three Name,Value pairs to findpeaks().

Calls built-in function findpeaks(), and calls parabolavertex3p(), supplied with this upload. See findPeaksInterpTest.m for demonstration and test.

W. Rose 2021-12-10.

引用格式

William Rose (2024). findpeaksInterp (https://www.mathworks.com/matlabcentral/fileexchange/103425-findpeaksinterp), MATLAB Central File Exchange. 检索来源 2024/4/23.