Graphical Lasso for Coloured Gaussian Graphical Models for Paired Data R package pdglasso version 2.0.1 Implements methods for coloured Gaussian graphical models with equality "R"estrictions on "CON"centration values (RCON models; Højsgaard and Lauritzen (2008) <doi:10.1111/j.1467-9868.2008.00666.x>) for paired data (pdRCON models). Provides an Alternating Direction Method of Multipliers (ADMM) algorithm for solving the penalized likelihood problem introduced by Ranciati and Roverato (2024) <doi:10.1007/s11222-024-10513-6>. Provides functions for computing maximum likelihood estimates and generating simulated pdRCON models and datasets. Software Imports: Rcpp (>= 1.0.13), MASS LinkingTo: Rcpp, RcppEigen Anna Vesely <anna.vesely2@unibo.it> Comprehensive R Archive Network (CRAN) Saverio Ranciati [aut] (ORCID: <https://orcid.org/0000-0001-7880-9465>), Alberto Roverato [aut] (ORCID: <https://orcid.org/0000-0001-7984-3593>), Anna Vesely [aut, cre] (ORCID: <https://orcid.org/0000-0001-6696-2390>), Peter Majcen [aut] (ORCID: <https://orcid.org/0009-0009-7020-7246>) GPL (>= 3) 2026-09-08 application/tgz https://CRAN.R-project.org/package=pdglasso doi:10.32614/CRAN.package.pdglasso