d3/data в 198ee5f86d0251d34540900cae8739ad985499c4 - d3

История

Michael Bostock 3ecb7534ef Non-contiguous cartogram example. Also includes new d3.geom.polygon.centroid method. Props to Zachary Johnson for the inspiration!		2011-02-23 12:33:18 -08:00
..
README	State outlines; breakout AK, HI & PR.	2010-11-02 16:54:18 -07:00
us-counties.json	Reformat us-counties.json for readability.	2011-01-05 15:38:17 -08:00
us-state-centroids.json	Add symbol map, composite Albers projection.	2010-11-02 23:06:32 -07:00
us-states.json	Non-contiguous cartogram example.	2011-02-23 12:33:18 -08:00
world-countries.json	Move properties.id to id.	2011-01-20 10:40:14 -08:00

README

These are derived from the cartographic boundary files from the 2000 U.S. Census:

http://www.census.gov/geo/www/cob/bdy_files.html

Then, MapShaper was used to simplify the geometry, and ogr2ogr to convert the shapefiles to GeoJSON. Some additional work was done to preserve the FIPS codes, which are dropped from the shapefiles by MapShaper.