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: 2026-10-03 08:36:43 UTC; root
Author: Yong-Han Hank Cheng [aut, cre] (ORCID:
        <https://orcid.org/0000-0001-7686-0697>)
Maintainer: Yong-Han Hank Cheng <yhhc@uw.edu>
Repository: https://yhankcheng.r-universe.dev
Date/Publication: 2025-09-08 02:13:43 UTC
RemoteUrl: https://github.com/cran/psdr
RemoteRef: HEAD
RemoteSha: cc025c9152e9b8bcfa43cafd680d76f5ef797bfd