US State and World Population Cartograms
These are cartograms sized by population for US states and world countries created using the Sebastian Jeworutzki's cartogram library in R.
They are provided as GeoJSON files (WGS 1984) but will look as created if reprojected to EPSG 3395 (World Mercator).
The continuous area versions use a rubber sheet distortion algorithm (Dougenik et al. 1985). The noncontinuous area versions use a scaling algorithm (Olson 1976).
Source Data
Country boundaries are from the wrld_simpl data set from the R maptools library. The data was originally sourced from Bjoern Sandvik's Mapping Hacks website, and a version is available from NASA at https://github.com/nasa/World-Wind-Java/tree/master/WorldWind/testData/shapefiles.
2019 country population: World Bank. 2020. "Population, total." https://data.worldbank.org/indicator/SP.POP.TOTL?view=chart. Accessed 30 July 2020.
2018 20-meter US state boundaries: US Census Bureau. 2020. "Cartographic Boundary Files - Shapefile." https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html. Accessed 30 July 2020.
US Census Bureau. 2020. "Total Population," 2018 American Community Survey 5-Year Estimates, Table B01003. https://data.census.gov. Accessed 30 July 2020.
Attributes
ISO3: Three-letter ISO country code (world data)
AFFGEOID: 12-digit geographic identifier used in data.census.gov and TIGER shapefiles
STUSPS: USPS two-letter state code
NAME: State or country name
POPULATION: 2019 population from sources above