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unexcel: Revert Spreadsheet Date Auto-Conversion to the Numbers Typed

Spreadsheets silently turn entries such as '30.3' into dates, so the imported data carry date serials instead of the numbers that were typed. Reading the workbook directly recovers those numbers without guesswork: an 'xlsx' file states its own date system, and records which cells are formatted as dates and in which field order, so the values to repair are identified from the file rather than inferred from their magnitude. Functions are also provided for data already imported, where that evidence is no longer available, using conservative and configurable detection.

Version: 0.2.0
Depends: R (≥ 3.6)
Imports: stats, utils, xml2 (≥ 1.3.0)
Suggests: knitr (≥ 1.40), pkgdown (≥ 2.0.0), rmarkdown (≥ 2.20), testthat (≥ 3.0.0)
Published: 2026-07-28
DOI: 10.32614/CRAN.package.unexcel
Author: Hercules R. Freitas ORCID iD [aut, cre, cph]
Maintainer: Hercules R. Freitas <hercules.freitas at uerj.br>
BugReports: https://github.com/drhrf/unexcel/issues
License: MIT + file LICENSE
URL: https://github.com/drhrf/unexcel, https://drhrf.github.io/unexcel/
NeedsCompilation: no
Language: en-US
Materials: README, NEWS
CRAN checks: unexcel results

Documentation:

Reference manual: unexcel.html , unexcel.pdf
Vignettes: Excel date systems and number formats (source, R code)
Getting started with unexcel (source, R code)

Downloads:

Package source: unexcel_0.2.0.tar.gz
Windows binaries: r-devel: unexcel_0.2.0.zip, r-release: unexcel_0.2.0.zip, r-oldrel: unexcel_0.2.0.zip
macOS binaries: r-release (arm64): unexcel_0.2.0.tgz, r-oldrel (arm64): unexcel_0.2.0.tgz, r-release (x86_64): unexcel_0.2.0.tgz, r-oldrel (x86_64): unexcel_0.2.0.tgz
Old sources: unexcel archive

Linking:

Please use the canonical form https://CRAN.R-project.org/package=unexcel to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.