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dft_acf

Discrete Fourier Transformation for Autocovariance Function

Description

Calculates the autovariance function (ACF) using Discrete Fourier Transformation.

Usage

dft_acf(x)

Arguments

x

A cx_vec.

Details

This implementation is 2x as slow as Rs. Two issues: 1. memory resize and 2. unoptimized fft algorithm in arma. Consider piping back into R and rewrapping the object. (Decrease of about 10 microseconds.)

Value

A vec containing the ACF.

simts

Time Series Analysis Tools

v0.1.1
AGPL-3 | file LICENSE
Authors
Stéphane Guerrier [aut, cre, cph], James Balamuta [aut, cph], Roberto Molinari [aut, cph], Justin Lee [aut], Yuming Zhang [aut], Wenchao Yang [ctb], Nathanael Claussen [ctb], Yunxiang Zhang [ctb], Christian Gunning [cph], Romain Francois [cph], Ross Ihaka [cph], R Core Team [cph]
Initial release
2019-07-21

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