Alpha-shapes aka concave hulls in d3

Alpha-shapes aka concave hulls in d3

I implemented a pretty simple algorithm which computes alpha-shapes aka. the concave hull of a point set.

HCL Colors in Chroma.js

HCL Colors in Chroma.js

I created an interactive tool for exploration of color scales in different color spaces.

Stuttgart 21: Referendum vs. Election results

Stuttgart 21: Referendum vs. Election results

This graphic opposes the results of a recent referendum to the latest election results.

Map of Internet and Population

Map of Internet and Population

I tried to visualize the global digital divide by mapping more than 80,000 populated places against 350,000 locations of IP addresses.

Remake of Ben Fry’s Fortune 500 Viz

Remake of Ben Fry’s Fortune 500 Viz

A HTML5 remake to step in the fight against Java applets.

Fraction vs. Conscience

Fraction vs. Conscience

A radial scatterplot that shows the consensus of fractions at roll-call votes in the German Bundestag.

Streamgraph Library for AS3

Streamgraph Library for AS3

I ported the streamgraph Processing code by Lee Byron and Martin Wattenberg to ActionScript.

Treemap Library for AS3

Treemap Library for AS3

Simple and lightweight library for creating Treemaps in ActionScript.

Streets of Berlin

Streets of Berlin

A street-and-railways-only map of Berlin in poster size.

Color Blindness Test Images

Color Blindness Test Images

I generated color blindness test images that show simple icons instead of numbers.

Shortest Distances to Nuclear Reactors

Shortest Distances to Nuclear Reactors

Keep away from the red areas in case of emergency.

Visualizing Plagiarism

Visualizing Plagiarism

Showing plagiarized lines and footnotes in the PhD thesis of former minister of defense.

Production vs. Consumption

Production vs. Consumption

This Processing experiment was a kind of precursor for the Europe’s Energy project.

Wikileaks Mirror Network

Wikileaks Mirror Network

Animated map of all Wikileaks mirror server locations that appeared after the blocking of the main Wikileaks site.

Twitter Live Map

Twitter Live Map

Live visualization of geo-tagged Twitter messages that were sent during the CASTOR transport in November 2010.

Additional Incomes of Parliamentarians

Additional Incomes of Parliamentarians

This interactive map shows the extra incomes of Members of the German Bundestag

Visualization of Isolines

Visualization of Isolines

Implementation of a simple isoline generation algorithm in ActionScript.

German Party Donations

German Party Donations

Visualization of around 300 donations given to German parties with minimum amounts of 50.000€.

Visualizing Network Traffic

Visualizing Network Traffic

Mapped servers and routes that are involved in a short file-sharing session.

United States Poverty Map

United States Poverty Map

Demonstration of my now-discontinued project OpenFlashMaps.

Experiments With Streamgraph Colors

Experiments With Streamgraph Colors

I created a tool for experimentation with streamgraph color scales.

World Map Widget for Piwik

World Map Widget for Piwik

I created an open source map widget for Piwik Web Analytics, which is now part of the core.

Sunburst Browser Statistics

Sunburst Browser Statistics

I created this as a module for the opensource Piwik Web Analytics software.

World Map of Internet Adresses

World Map of Internet Adresses

Reverse-visualization of 1,139,441,531 geolocated ip-adresses in the GeoCity Lite database.

Showcase of Map Projections

Showcase of Map Projections

Interactive demo of the different map projections included in my as3proj library.

World Biggest Companies

World Biggest Companies

A huge line chart of the 2000 biggest companies listed in the Forbes2000 index.

Visualizing Postal Codes

Visualizing Postal Codes

Interactive visualization of German Postal Codes as seen in the book Visualizing Data by Ben Fry.

Distinguishable Random Colors

Distinguishable Random Colors

An attempt of finding a hue transformation to make “neighbour” colours more distinguishable.

Optimizing Text Readability

Optimizing Text Readability

Experimented with the HSL color space to increase text readability on white backgrounds.

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