R: Fast Fourier transform features.

extractFDAFourier {mlr} | R Documentation

## Fast Fourier transform features.

### Description

The function extracts features from functional data based on the fast fourier transform. For more details refer to stats::fft.

### Usage

    extractFDAFourier(trafo.coeff = "phase")

### Arguments

`trafo.coeff` | (`character(1)`) Specifies which transformation of the complex frequency domain representation should be calculated as a feature representation. Must be one of “amplitude” or “phase”. Default is “phase”. The phase shift is returned in Rad, i.e. values lie in [-180, 180].

### Value

(data.frame).

### See Also

Other fda_featextractor: `extractFDABsignal()`, `extractFDADTWKernel()`, `extractFDAFPCA()`, `extractFDAMultiResFeatures()`, `extractFDATsfeatures()`, `extractFDAWavelets()`

[Package mlr version 2.19.0 Index]