solveWaveFFT

Version 1.1.2 (1.73 KB) by Ian Ammerman
Performs fast fourier transform on wave elevation time-series and outputs dominant frequencies & corrosponding power spectrum values.
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Updated 14 Apr 2023

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Note: Description accessible with Matlab's built-in "help" function.
The function solveWaveFFT(eta,Fs,units,peaks) computes and plots the 1-sided spectrum from the fast fourier transform of a given time series signal (eta). This function utilizes Matlab's built-in fft function.
Inputs:
  1. eta – wave elevation time series
  2. Fs – sampling frequency
  3. Units – toggle (1: Hz | 2: rads/s)
  4. Peaks – number of peaks of interest from transform
Outputs:
  1. Ap – amplitude of peaks
  2. fp – frequency value of transform peaks, in units specified by input 3.

Cite As

Ian Ammerman (2026). solveWaveFFT (https://au.mathworks.com/matlabcentral/fileexchange/127808-solvewavefft), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2023a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.1.2

Updated number of peaks to consider when ranking to improve accuracy for complex wave environments.
1.1.1

Bug fixes
1.1.0

Corrected function to output peaks in descending order of magnitude.
1.0.0