Baseline Correction of Spectra R package baseline version 1.3-7 Collection of baseline correction algorithms, along with a framework and a Tcl/Tk enabled GUI for optimising baseline algorithm parameters. Typical use of the package is for removing background effects from spectra originating from various types of spectroscopy and spectrometry, possibly optimizing this with regard to regression or classification results. Correction methods include polynomial fitting, weighted local smoothers and many more. Software Depends: R (>= 3.5.0) Imports: graphics, SparseM, grDevices, stats, methods Suggests: gWidgets2, gWidgets2tcltk, IDPmisc, lattice, pls, MASS Kristian Hovde Liland <kristian.liland@nmbu.no> Comprehensive R Archive Network (CRAN) Kristian Hovde Liland [aut, cre] (ORCID: <https://orcid.org/0000-0001-6468-9423>), Bjørn-Helge Mevik [aut], Roberto Canteri [ctb] GPL-2 2025-06-18 application/tgz https://CRAN.R-project.org/package=baseline doi:10.32614/CRAN.package.baseline