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diagL1  

Routines for Fit, Inference and Diagnostics in Linear L1 and LAD Models
View on CRAN: Click here


Download and install diagL1 package within the R console
Install from CRAN:
install.packages("diagL1")

Install from Github:
library("remotes")
install_github("cran/diagL1")

Install by package version:
library("remotes")
install_version("diagL1", "1.0.1")



Attach the package and use:
library("diagL1")
Maintained by
Kevin Allan Sales Rodrigues
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2023-08-31
Latest Update: 2025-09-03
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) .
How to cite:
Kevin Allan Sales Rodrigues (2023). diagL1: Routines for Fit, Inference and Diagnostics in Linear L1 and LAD Models. R package version 1.0.1, https://cran.r-project.org/web/packages/diagL1. Accessed 26 Jul. 2026.
Previous versions and publish date:
(2026-07-09 07:31), 0.0.3 (2023-08-31 15:50), 0.0.6 (2023-09-02 08:30), 1.0.0 (2024-01-30 01:30)
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