USAboundaries: Historical and Contemporary Boundaries of the United States of America

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Authors Lincoln Mullen, Jordan Bratt
Journal/Conference Name J. Open Source Software
Paper Category
Paper Abstract Licence Authors of papers retain copyright and release the work under a Creative Commons Attribution 4.0 International License (CC-BY). The USAboundaries package for R provides contemporary and historical boundaries of the United States of America (Mullen and Bratt 2017). (The package is available on GitHub and archived on Zenodo.) Historical data in the package includes state and county boundaries from 1629 to 2000 from the Newberry Library’s “Atlas of Historical County Boundaries” (Long 2010). Also included is historical city population data from Erik Steiner’s “United States Historical City Populations, 1790-2010” (Steiner 2016). Contemporary data in the package includes state, county, and Congressional district boundaries, as well as Zip Code Tabulation Area centroids. These data are all drawn from the U.S. Census Bureau (U.S. Census Bureau 2017).
Date of publication 2018
Code Programming Language R
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