Package: spaAlign
Title: Stratigraphic Plug Alignment for Integrating Plug-Based and XRF
        Data
Version: 0.0.7
Authors@R: c(
    person(given = c("Hope", "E."),
           family = "Omodolor",
           email = "hopeomodolor@gmail.com",
           role = "aut",
           comment = c(ORCID = "0009-0005-7842-406X")),
    person(given = c("Jeffrey", "M."),
           family = "Yarus",
           role = "aut"),
    person(given = c("Roger", "H."),
           family = "French",
           email = "rxf131@case.edu",
           role = "cre")
    )
Description: Implements the Stratigraphic Plug Alignment (SPA) procedure for
    integrating sparsely sampled plug-based measurements (e.g., total organic
    carbon, porosity, mineralogy) with high-resolution X-ray fluorescence
    (XRF) geochemical data. SPA uses linear interpolation via the base
    approx() function with constrained extrapolation (rule = 1) to preserve
    stratigraphic order and avoid estimation beyond observed depths. The
    method aligns all datasets to a common depth grid, enabling high-resolution
    multivariate analysis and stratigraphic interpretation of core-based
    datasets such as those from the Utica and Point Pleasant formations.
    See R Core Team (2025)
    <https://stat.ethz.ch/R-manual/R-devel/library/stats/html/stats-package.html>
    and Omodolor (2025)
    <http://rave.ohiolink.edu/etdc/view?acc_num=case175262671767524>
    for methodological background and geological context.
License: MIT + file LICENSE
Encoding: UTF-8
RoxygenNote: 7.3.3
Depends: R (>= 4.0)
Imports: stats
Suggests: testthat (>= 3.0.0), knitr, rmarkdown
Config/testthat/edition: 3
URL: https://omodolor.github.io/spaAlign/,
        https://github.com/Omodolor/spaAlign
BugReports: https://github.com/Omodolor/spaAlign/issues
NeedsCompilation: no
Packaged: 2026-10-09 02:53:16 UTC; hope
Author: Hope E. Omodolor [aut] (ORCID: <https://orcid.org/0009-0005-7842-406X>),
  Jeffrey M. Yarus [aut],
  Roger H. French [cre]
Maintainer: Roger H. French <rxf131@case.edu>
Repository: CRAN
Date/Publication: 2026-10-09 12:40:02 UTC
Built: R 4.5.3; ; 2026-10-11 23:52:04 UTC; windows
