v2.4

2025-10-29 21:58:52

Author: DSStoffer

NEWS.md

@@ -47,9 +47,8 @@ remotes::install_github("nickpoison/astsa/astsa_build")
 
 > We'll send this version to CRAN when the 2nd edition of [Time Series: A Data Analysis Approach ...](https://www.routledge.com/Time-Series-A-Data-Analysis-Approach-Using-R/Shumway-Stoffer/p/book/9781041031642) is published. The planned publication date is Jan/Feb 2026.
 
-- in `arma.spec`, added option (`redundancy.tol`) to specify how close roots have to be to report a warning of parameter redundancy or over-parameterization (default is .1).
+- in `arma.spec`, added option (`redundancy.tol`) to specify how close the inverse roots have to be to report a warning of parameter redundancy or over-parameterization (default is .1).
 
-   > For example, `arma.spec(ar=.9, ma=-.85)` will report over-parameterization, whereas `arma.spec(ar=.9, ma=-.85, red=.05)` will not because the roots are 1/.9 ≈ 1.111 and 1/.85 ≈ 1.176, which differ by about .065.  
 
 - removed asking if the user wants `xts` to be installed at startup ... _apologies_ for doing what we said we would never do - it's  why there is an update so soon