https://github.com/philipwaldman/world-cities

Visualizes the population of cities around the world
https://github.com/philipwaldman/world-cities

cities maps population

Last synced: 17 days ago
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Visualizes the population of cities around the world

• Host: GitHub
• URL: https://github.com/philipwaldman/world-cities
• Owner: PhilipWaldman
• Created: 2019-03-13T00:42:43.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2020-12-05T16:28:20.000Z (almost 5 years ago)
• Last Synced: 2025-05-14T10:22:58.109Z (5 months ago)
• Topics: cities, maps, population
• Language: Processing
• Homepage:
• Size: 272 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
![Map of World](WorldCities/world.png)

### The dataset

The wordcities.csv dataset contains 11,276 cities around the world. For every city its name, name in ascii, country, latitude, longitude, and population is provided.

### How it is visualized

A city is represented by a dot that is draw at its coordinates. Every three pixels is equivalent to one degree.

The color of a dot is on a gradient that goes from red (r=255, g=0, b=0) to green (r=0, g=255, b=0). Where red corresponds to a population of zero and green is any population greater than one million.

The size of the dot is determined by mapping a population of zero to a dot size of one pixel and a population of twenty million to a dot size of ten pixels. This results in the formula: `dot size = 5E-7 × population + 1`.