Support Functions for Time Series Analysis Book R package disagg2 version 0.1.0 Contains the support functions for the Time Series Analysis book. We present a function to calculate MSE and MAE for inputs of actual and forecast values. We also have the code for disaggregation as found in Wei and Stram (1990, <doi:10.1111/j.2517-6161.1990.tb01799.x>), and Hodgess and Wei (1996, "Temporal Disaggregation of Time Series"). Software Depends: R (>= 4.4.0), PolynomF Erin Hodgess <erinm.hodgess@gmail.com> Comprehensive R Archive Network (CRAN) Erin Hodgess [aut, cre] GPL-2 GPL-3 2025-02-24 application/tgz https://CRAN.R-project.org/package=disagg2 doi:10.32614/CRAN.package.disagg2