https://github.com/shawnbot/topogram

Continuous area cartograms with d3 and TopoJSON
https://github.com/shawnbot/topogram

cartogram javascript topojson topology

Last synced: 4 days ago
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Continuous area cartograms with d3 and TopoJSON

• Host: GitHub
• URL: https://github.com/shawnbot/topogram
• Owner: shawnbot
• License: mit
• Created: 2012-11-26T16:28:53.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2023-04-14T23:48:10.000Z (over 1 year ago)
• Last Synced: 2024-10-26T18:45:24.706Z (9 days ago)
• Topics: cartogram, javascript, topojson, topology
• Language: HTML
• Homepage:
• Size: 1.62 MB
• Stars: 326
• Watchers: 22
• Forks: 131
• Open Issues: 14
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-d3 - d3-topogram - Continuous area cartograms based on TopoJSON (Maps)
• awesome-d3 - d3-topogram - Continuous area cartograms based on TopoJSON (Maps)
• awesome-d3 - d3-topogram - Continuous area cartograms based on TopoJSON (Maps)
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README

        
# Topogram

This is a JavaScript implementation of [an algoritm to construct continuous area cartograms](http://lambert.nico.free.fr/tp/biblio/Dougeniketal1985.pdf), by James A. Dougenik, Nicholas R. Chrisman and Duane R. Niemeyer, ©1985 by the Association of American Geographers. It relies heavily on [d3](http://github.com/mbostock/d3) for rendering and [TopoJSON](http://github.com/mbostock/topojson) both for writing and reading topological JSON geodata.

The [included example](https://github.com/shawnbot/topogram/blob/master/index.html) combines TopoJSON-encoded and boundaries of the United States from [Natural Earth](http://www.naturalearthdata.com/downloads/110m-cultural-vectors/) with [2011 US Census population estimates](http://www.census.gov/popest/data/state/totals/2011/) to size each state proportionally.