Package: psdr
Title: Use Time Series to Generate and Compare Power Spectral Density
Version: 1.0.3
Authors@R: 
    person(given = "Yong-Han Hank",
           family = "Cheng",
           role = c("aut", "cre"),
           email = "yhhc@uw.edu",
           comment = c(ORCID = "0000-0001-7686-0697"))
Description: Functions that allow you to generate and compare power spectral density (PSD) 
	plots given time series data. Fast Fourier Transform (FFT) is used to take a time series 
	data, analyze the oscillations, and then output the frequencies of these oscillations 
	in the time series in the form of a PSD plot.Thus given a time series, the dominant 
	frequencies in the time series can be identified. Additional functions in this package 
	allow the dominant frequencies of multiple groups of time series to be compared with each other. 
	To see example usage with the main functions of this package, please visit
	this site: <https://yhhc2.github.io/psdr/articles/Introduction.html>. 
	The mathematical operations used to generate the PSDs are described in these sites:
	<https://www.mathworks.com/help/matlab/ref/fft.html>.
	<https://www.mathworks.com/help/signal/ug/power-spectral-density-estimates-using-fft.html>.
License: GPL (>= 3) | file LICENSE
Encoding: UTF-8
RoxygenNote: 7.1.1
Imports: ggplot2 (>= 3.3.2), stats (>= 4.0.2)
Suggests: rmarkdown, knitr, testthat (>= 3.0.0), devtools (>= 2.4.1),
        qpdf
VignetteBuilder: knitr
Config/testthat/edition: 3
NeedsCompilation: no
Packaged: 2025-09-07 22:21:34 UTC; Hank
Author: Yong-Han Hank Cheng [aut, cre] (ORCID:
    <https://orcid.org/0000-0001-7686-0697>)
Maintainer: Yong-Han Hank Cheng <yhhc@uw.edu>
Repository: CRAN
Date/Publication: 2025-09-07 23:50:01 UTC
Built: R 4.6.0; ; 2026-04-28 08:56:20 UTC; unix
