M.V. Jantzen
Side-by-Side Router Bird's-eye view of CaBi stations 2013 daily ridership stats for Capital Bikeshare Voronoi diagram of CaBi stations CaBi Range Activity Mapper Trip Visualizer DC/Arlington Bike Shop Map Force Diagram Metro Places Citi Bike Mapper Market Mapper Metro Distortion Map Metro Pac-Man Passenger Origins and Destinations Bay Area Bikeshare Station Status History Color Picker Projected WMATA GTFS Animation Passenger Information Display Meetup Explorer Stat Mapper Metro Hangman Yelp Map G+ Places Map 11,485 bus stops Arlington Historic Sites Kaiser Permanente Explorer Flickr Calend'r Strava Explorer Echo Scrolling Display Letterball Heatmapper WordWhere CaBi Mapper CaBi Dashboard Perpetual Happiness Flickr Finder Geo GIF Capital Bikeshare, Oct 1-7, 2012, Arlington CaBi trips on Mar 23, 2012 (ripples) 2014 Q3 CaBi Trips CaBi Trips to/from the Jefferson Memorial


I create tools and data visualizations using transportation data. Most of the projects shown here use data and APIs from Capital Bikeshare and WMATA.

My main language is JavaScript and CSS, with some experience with the D3 library. I use PHP to write my own proxy scripts to access APIs. I create QuickTime animations using Java (via Processing).

I work with many APIs: Google Maps, Google Places, WMATA, Yelp, the USDA farmers markets API, Meetup, Twitter, Flickr, and Interchange by Kaiser Permanente, as well as XML feeds from Capital Bikeshare and Citi Bike.

I run the Transportation Techies Meetup group on behalf of Mobility Lab.

My blog is at mvjantzen.com/blog.