Tiered PC Algorithm R package tpc version 1.0 Constraint-based causal discovery using the PC algorithm while accounting for a partial node ordering, for example a partial temporal ordering when the data were collected in different waves of a cohort study. Andrews RM, Foraita R, Didelez V, Witte J (2021) <arXiv:2108.13395> provide a guide how to use tpc to analyse cohort data. Software Depends: pcalg, R (>= 3.5.0) Imports: graph, graphics, methods, parallel, utils Suggests: Rgraphviz, testthat (>= 3.0.0) Ronja Foraita <foraita@leibniz-bips.de> Comprehensive R Archive Network (CRAN) Janine Witte [aut], Ronja Foraita [cre, ctb] (ORCID: <https://orcid.org/0000-0003-2216-6653>), DFG [fnd] GPL (>= 3) 2023-02-20 application/tgz https://CRAN.R-project.org/package=tpc doi:10.32614/CRAN.package.tpc