,
Dr. William M. Scholl Center for American History and Culture, The
Newberry Library [cph],
United States Census Bureau [cph],
Erik Steiner [ctb]| Title: | Datasets for the 'USAboundaries' package |
|---|---|
| Description: | Contains datasets, including higher resolution boundary data, for use in the 'USAboundaries' package. These datasets come from the U.S. Census Bureau, the Newberry Library's 'Historical Atlas of U.S. County Boundaries', and Erik Steiner's 'United States Historical City Populations, 1790-2010'. |
| Authors: | Lincoln Mullen [aut, cre] ,
Dr. William M. Scholl Center for American History and Culture, The
Newberry Library [cph],
United States Census Bureau [cph],
Erik Steiner [ctb] |
| Maintainer: | Lincoln Mullen <[email protected]> |
| License: | CC BY-NC-SA 4.0 |
| Version: | 0.4.0 |
| Built: | 2024-10-05 05:56:57 UTC |
| Source: | https://github.com/ropensci/USAboundariesData |
These datasets contain polygons for historical boundaries in the United
States. These boundaries are taken from the Atlas of Historical County
Boundaries. State boundaries cover the period from 1783 to 2000, and county
boundaries cover the period from 1629 to 2000. The attribute data includes of
the changes to the boundaries and the dates with which they valid. For a full
description of all of the columns in the data frame, see the
documentation
in the zip files provided by AHCB. The datasets are objects of class
sf from the sf package.
They are intended to be used with the functions in the USAboundaries
package, but the data objects can also be used on their own. The data
attributes associated with these boundaries are unchanged from what is
available in the AHCB shapefiles files, with the exception that
state_name, state_abbreviation, and state_code columns
have been added where necessary for convience in filtering the boundaries.
The high resolution boundaries have been generalized to a .01 degree tolerance (1:2,500,000; 1 inch = 39 miles). The low resolution boundaries have been generalized to a .05 degree tolerance (1:12,500,000; 1 inch = 197 miles). See the AHCB website for higher-resolution shapefiles.
See the USAboundaries package for low-resolution state boundaries and for the functions to access this data.
John H. Long, et al., Atlas of Historical County Boundaries, Dr. William M. Scholl Center for American History and Culture, The Newberry Library, Chicago (2010), http://publications.newberry.org/ahcbp/.
See also the AHCB's about page.
The U.S. Census Bureau provides
cartographic
boundary files for current U.S. boundaries. The datasets in this package
provide a selection of boundaries from the 2020 Census files. They are
objects of class sf from the
sf package. They are intended
to be used with the functions in the USAboundaries package, but the
data objects can also be used on their own. The data attributes associated
with these boundaries are unchanged from what is available in the Census
boundary files, with the exception that state_name and
state_abbreviation columns have been added where necessary for
convience in filtering the boundaries.
The following objects are included in this package:
Congressional district boundaries for the 116th Congress, 1:500k resolution.
Congressional district boundaries for the 116th Congress, 1:20m resolution.
County boundaries, 1:500k resolution.
County boundaries, 1:20m resolution.
State boundaries, 1:500k resolution.
Centroids of Zip Code Tabulation Areas (2019).
See the USAboundaries package for low-resolution state boundaries and for the functions to access this data.
U.S. Census Bureau, Cartographic Boundary Shapefiles (2020).
See the U.S. Census Bureau's "Understanding Geographic Identifiers (GEOIDs)" and their "Geographic Codes" pages for the details of this attribute data.
This sf object contains historical population data for U.S. cities
with latitudes and longitudes of the cities. The data is drawn from the U.S.
Census. The data was compiled by Erik Steiner and Jason Heppler at the Center
for Spatial and Textual Analysis, Stanford University. See their
description
of the data for a fuller accounting of how the data was gathered.
census_citiescensus_cities
An object of class sf (inherits from tbl_df, tbl, data.frame) with 62197 rows and 13 columns.
U.S. Census Bureau and Erik Steiner, "United States Historical City Populations, 1790-2010," Spatial History Project, Center for Spatial and Textual Analysis, Stanford University, https://github.com/cestastanford/historical-us-city-populations/.