Continuous Wavelet Transformation for Spectroscopy R package CWT version 0.2.1 Fast application of Continuous Wavelet Transformation ('CWT') on time series with special attention to spectroscopy. It is written using data.table and 'C++' language and in some functions it is possible to use parallel processing to speed-up the computation over samples. Currently, only the second derivative of a Gaussian wavelet function is implemented. Software Depends: R (>= 4.0.0) Imports: data.table (>= 1.14.0), Rcpp LinkingTo: Rcpp, RcppArmadillo Suggests: testthat (>= 3.2.0) J. Antonio Guzmán Q. <antguz06@gmail.com> Comprehensive R Archive Network (CRAN) J. Antonio Guzmán Q. [cre, aut, cph] (ORCID: <https://orcid.org/0000-0002-0721-148X>) GPL (>= 3) 2024-06-28 application/tgz https://CRAN.R-project.org/package=CWT doi:10.32614/CRAN.package.CWT en-US