artoo: Lossless CDISC-Native Input and Output for Clinical Datasets

Reads and writes clinical-trial datasets losslessly across 'SAS' XPORT (XPT), Clinical Data Interchange Standards Consortium (CDISC) Dataset-JSON, and 'Apache Parquet', applying a specification to produce submission-ready Study Data Tabulation Model (SDTM) and Analysis Data Model (ADaM) datasets. A single canonical metadata model carries labels, CDISC data types, lengths, 'SAS' display formats, controlled-terminology references, and sort keys identically across every format, so conversion between any two formats is lossless by construction. Pure 'R' and lightweight, with no external 'SAS' or 'Java' runtime. Implements the published format specifications for CDISC Dataset-JSON (<https://cdisc-org.github.io/DataExchange-DatasetJson/doc/dataset-json1-1.html>) and 'SAS' XPORT (<https://www.loc.gov/preservation/digital/formats/fdd/fdd000466.shtml>).

Version: 0.1.1
Depends: R (≥ 4.2)
Imports: cli, hms, jsonlite, nanoparquet (≥ 0.3.0), rlang (≥ 1.1.0), S7, utf8
Suggests: quarto, readxl, testthat (≥ 3.0.0), tibble, withr, writexl, xml2
Published: 2026-06-24
DOI: 10.32614/CRAN.package.artoo (may not be active yet)
Author: Vignesh Thanikachalam [aut, cre, cph]
Maintainer: Vignesh Thanikachalam <about.vignesh at gmail.com>
BugReports: https://github.com/vthanik/artoo/issues
License: MIT + file LICENSE
URL: https://vthanik.github.io/artoo/, https://github.com/vthanik/artoo
NeedsCompilation: no
Language: en-US
Materials: README, NEWS
CRAN checks: artoo results

Documentation:

Reference manual: artoo.html , artoo.pdf
Vignettes: Get started with artoo (source, R code)

Downloads:

Package source: artoo_0.1.1.tar.gz
Windows binaries: r-devel: not available, r-release: not available, r-oldrel: not available
macOS binaries: r-release (arm64): artoo_0.1.1.tgz, r-oldrel (arm64): artoo_0.1.1.tgz, r-release (x86_64): artoo_0.1.1.tgz, r-oldrel (x86_64): artoo_0.1.1.tgz

Linking:

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