Seasonal Adjustment of Weekly Data R package boiwsa version 1.1.4 CRAN Task View: TimeSeries (https://CRAN.R-project.org/view=TimeSeries) Perform seasonal adjustment and forecasting of weekly data. The package provides a user-friendly interface for computing seasonally adjusted estimates and forecasts of weekly time series and includes functions for the construction of country-specific prior adjustment variables, as well as diagnostic tools to assess the quality of the adjustments. The methodology is described in more detail in Ginker (2024) <doi:10.13140/RG.2.2.12221.44000>. Software Depends: R (>= 2.10) Imports: dplyr, forecast, ggplot2, Hmisc, lubridate, stats, tidyr, rlang, gridExtra Tim Ginker <tim.ginker@gmail.com> Comprehensive R Archive Network (CRAN) Tim Ginker [aut, cre, cph] (ORCID: <https://orcid.org/0000-0002-7138-5417>), Jon Lachman [ctb] MIT + file LICENSE (https://CRAN.R-project.org/package=boiwsa/LICENSE) 2025-12-14 application/tgz https://CRAN.R-project.org/package=boiwsa doi:10.32614/CRAN.package.boiwsa