code_swarm

An experiment in organic software visualization.

A moment from the Eclipse project. [video]

I've been studying software projects for a while now. Not the programming, but the people -- the way they interact with each other through collaboration and communication. My investigations have always been visual: I've built applications that create pictures of what is happening within software projects. But they have always had a rigid structure to them. Organic information visualization, coined by Ben Fry, is a different approach to information visualization. It eschews traditional data confinement in space and lets the elements play together in freeform and unpredictable ways.

This visualization, called code_swarm, shows the history of commits in a software project. A commit happens when a developer makes changes to the code or documents and transfers them into the central project repository. Both developers and files are represented as moving elements. When a developer commits a file, it lights up and flies towards that developer. Files are colored according to their purpose, such as whether they are source code or a document. If files or developers have not been active for a while, they will fade away. A histogram at the bottom keeps a reminder of what has come before.

Please have a look at the videos below. Each one shows a particular software project's evolution. The videos also contain some background information on the projects. The links will take you to Vimeo pages, where a low-quality version can be streamed and viewed in your browser. On those pages, towards the bottom-right, there are also links to download the full quality version of the video.

Eclipse (in HD)

The open source integrated development environment.
The enormous amount of file commits and developers required HD rendering.

Python

The open source scripting language. This is the best starting point.
Guido controls the project from the start, with a few developers joining in. A popularity boom happens in 2000.

PostgreSQL

The open source database management system.
Having only a handful of consistent developers makes this project highly specialized.

Apache

The open source webserver.
Lots of planning in documentation leads up to the alpha release of 2.0, with constant activity afterwards.

The code is open source and available at http://code.google.com/p/codeswarm.

Created by Michael Ogawa with Processing.
Thanks to Premkumar Devanbu, Christian Bird and Alex Gourley for gathering the data.

VIDI group, UC Davis

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