Package: diagL1 Type: Package Title: Routines for Fit, Inference and Diagnostics in Linear L1 and LAD Models Version: 1.0.1 Authors@R: c(person(given = "Kevin Allan", family = "Sales Rodrigues", role = c("aut", "cre"), email = "kevin.asr@outlook.com", comment = c(ORCID = "0000-0003-4925-5883")), person(given = "Silvia", family = "Nagib Elian", role = c("ctb", "ths"))) Author: Kevin Allan Sales Rodrigues [aut, cre] (ORCID: ), Silvia Nagib Elian [ctb, ths] Maintainer: Kevin Allan Sales Rodrigues Description: Diagnostics for linear L1 regression (also known as LAD - Least Absolute Deviations), including: estimation, confidence intervals, tests of hypotheses, measures of leverage, methods of diagnostics for L1 regression, special diagnostics graphs and measures of leverage. The algorithms are based in Dielman (2005) , Elian et al. (2000) and Dodge (1997) . This package builds on the 'quantreg' package, which is a well-established package for tuning quantile regression models. There are also tests to verify if the errors have a Laplace distribution based on the work of Puig and Stephens (2000) . License: GPL (>= 2) Depends: R (>= 3.6), quantreg (>= 6.1), greekLetters (>= 1.0.4) Encoding: UTF-8 LazyData: true Imports: stats, methods, conquer, lawstat, MatrixModels, Matrix, MASS, cubature, doParallel, foreach RoxygenNote: 7.3.2 NeedsCompilation: no Packaged: 2026-06-20 06:54:14 UTC; root Config/pak/sysreqs: make libicu-dev Repository: https://kevinds100.r-universe.dev Date/Publication: 2025-08-21 18:20:08 UTC RemoteUrl: https://github.com/cran/diagL1 RemoteRef: HEAD RemoteSha: 2aecca3fad1a534ca04f06ff174e567e9c82b6f0