MaddisonData: Maddison Project Data

Relatively easy access is provided to 2023 version of the Maddison project data downloaded 2025-08-28. This project collates all the credible data on population and GDP for 169 countries, with some dating back to the year 1 of the current era. One function makes it easy to find the leaders for each year, allowing users to delete countries like OPEC with narrow economies to focus on technology leaders. Another function makes it easy to plot data for only selected countries or years. Another function makes it relatively easy to obtain references to the original sources, which must be cited per the copyright rules of the Maddison Project for different uses of their data.

Version:	1.1.0
Depends:	R (≥ 4.1)
Suggests:	ggplot2, ipumsr, KFAS, knitr, lubridate, readxl, rmarkdown, testthat (≥ 3.0.0), tibble, usethis
Published:	2026-01-10
DOI:	10.32614/CRAN.package.MaddisonData
Author:	Spencer Graves [aut, cre]
Maintainer:	Spencer Graves <spencer.graves at effectivedefense.org>
BugReports:	https://github.com/sbgraves237/MaddisonData/issues
License:	MIT + file LICENSE
URL:	https://github.com/sbgraves237/MaddisonData
NeedsCompilation:	no
Language:	en-US
Citation:	MaddisonData citation info
Materials:	README, NEWS
CRAN checks:	MaddisonData results

Documentation:

Reference manual:	MaddisonData.html , MaddisonData.pdf
Vignettes:	IndustrialRevolution (source, R code) TechLeaders (source, R code) UpdateMaddisonData (source, R code)

Downloads:

Package source:	MaddisonData_1.1.0.tar.gz
Windows binaries:	r-devel: MaddisonData_1.0.2.zip, r-release: MaddisonData_1.0.2.zip, r-oldrel: MaddisonData_1.0.2.zip
macOS binaries:	r-release (arm64): MaddisonData_1.1.0.tgz, r-oldrel (arm64): MaddisonData_1.1.0.tgz, r-release (x86_64): MaddisonData_1.1.0.tgz, r-oldrel (x86_64): MaddisonData_1.1.0.tgz
Old sources:	MaddisonData archive

Linking:

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