usamap

Create a colorized svg map of the USA using ruby. Plot ranges and colors using FIPS coordinates for US counties.

Installation

  gem install usamap

Example Usage

require 'usamap'

colors = {}
colors[0..5] = '#CD5C5C'
colors[6..100] = 'blue'

stats = {}
stats['35001'] = 3  # 35001 is FIPS for Bernalillo, NM
stats['35049'] = 99 # 35049 is FIPS for Santa Fe, NM

my_map = USAmap.new(stats, colors)
puts my_map

Example Output

Credits/Resources

SVG Map: http://commons.wikimedia.org/wiki/File:Usa_counties_large.svg

FIPS Codes: http://en.wikipedia.org/wiki/FIPS_county_code

Inspiration

http://flowingdata.com/2009/11/12/how-to-make-a-us-county-thematic-map-using-free-tools/