indicatrix.org
Identifying Patterns in Bikeshare Trip Making—Indicatrix
http://www.indicatrix.org/2014/04/24/bikeshare-clustering
Identifying Patterns in Bikeshare Trip Making. By mattwigway on April 24, 2014. Bay Area Bike Share. Has recently released their trip history data; the data file contains the origin station, end station, time and date, and user type (day-pass or subscriber) for all the trips taken on the system since its inauguration on August 29, 2013. For another project, I had calculated accessibility measures for each bikeshare station in the Bay Area Bike Share system (using the beta OpenTripPlanner. Along with the ...
indicatrix.org
Game Theory and Snow Shoveling—Indicatrix
http://www.indicatrix.org/2015/02/26/snow-shoveling
Game Theory and Snow Shoveling. By mattwigway on February 26, 2015. My adopted city of Washington, DC, is shoveling out from under some of the last snow of the season. At the same time, we’ve just enacted a law. That levies fines on residents who don’t clear their sidewalks, after years of debate. There’s a very good reason to fine property owners for not shoveling their sidewalks. Snow shoveling is a what’s known as a multi-player prisoner’s dilemma. Or a regulation with fines attached.
indicatrix.org
Publications and Presentations—Indicatrix
http://www.indicatrix.org/publications
My publications and presentations, listed in reverse-chronological order. Also available in BibTeX. I don’t really like reading other people’s slides, but some people do so I include slides here. As always, if you have questions or comments about anything please contact me. Http:/ www.indicatrix.org/publications/2014/Conway-Bikeshare-Accessibility.pdf. Http:/ www.indicatrix.org/publications/2013/Conway-Jacobs-slides.pdf. Jane Jacobs, the noted author of The Death and Life of Great American Cities. Conway...
indicatrix.org
Dijkstra's Algorithm Visualization in the Browser—Indicatrix
http://www.indicatrix.org/2014/12/26/dijkstras-algorithm-visualization
Dijkstra's Algorithm Visualization in the Browser. By mattwigway on December 26, 2014. Is a method for finding the shortest path through a graph. A prose description of the algorithm is there; I hope it’s easier to understand with the interactive component. Visualizing algorithms tends to make them easier to understand, as observed by Mike Bostock. Permalink to this post. Comments powered by Disqus. By Matthew Wigginton Conway, 2011–2015.
indicatrix.org
Predicting the Popularity of Bicycle Sharing Stations: An Accessibility-Based Approach—Indicatrix
http://www.indicatrix.org/2014/05/01/predicting-the-popularity-of-bicycle-sharing-stations
Predicting the Popularity of Bicycle Sharing Stations: An Accessibility-Based Approach. By mattwigway on May 01, 2014. I presented a paper about modeling the popularity of bikesharing stations at the California Geographical Society. 2014 annual meeting in Los Angeles. I calculated accessibility measures to jobs and residents using Census and OpenStreetMap data and the open-source OpenTripPlanner. And Minneapolis St. Paul. 068), but it doesn’t transfer well (test R 2. 031 in Minneapolis/St. Paul and -...
indicatrix.org
Archive—Indicatrix
http://www.indicatrix.org/archive
Tip: use your web browser’s find feature to search for a post. January 24, 2016). Millenials and Communal Living. September 12, 2015). Game Theory and Snow Shoveling. February 26, 2015). Dijkstra’s Algorithm Visualization in the Browser. December 26, 2014). Accessibility Analysis with Python and OpenTripPlanner. November 01, 2014). Using GeoTools with Multiple User Accounts. October 20, 2014). Running RStudio Server on Amazon EC2. August 10, 2014). May 01, 2014). April 24, 2014). March 26, 2014). Decembe...
indicatrix.org
About Me—Indicatrix
http://www.indicatrix.org/about
I’m currently a software developer at Conveyal. Where I build cool tools for transportation management and analysis. I hold a BA in Geography. From the University of California, Santa Barbara. My interests lie in transportation, and public transport in particular. I am especially interested in computational modeling and analysis of transportation networks. In both professional and academic life, I am a developer on the OpenTripPlanner project. By Matthew Wigginton Conway, 2011–2015.
indicatrix.org
Accessibility Analysis with Python and OpenTripPlanner—Indicatrix
http://www.indicatrix.org/2014/11/01/accessibility-analysis-with-python-and-opentripplanner
Accessibility Analysis with Python and OpenTripPlanner. By mattwigway on November 01, 2014. Walking time to the nearest grocery store for all Census blocks in Chicago. Is a great bit of software for both customer-facing tools. Until recently, it had the capability to perform batch queries, calculating an origin-destination matrix or an aggregate measure of accessibility. Which broke down roughly into two camps: one camp arguing for something that is purely a configuration file, with another camp arguing ...
indicatrix.org
Microaccessibility with OpenTripPlanner—Indicatrix
http://www.indicatrix.org/2013/06/20/microaccessibility-with-opentripplanner
By mattwigway on June 20, 2013. Is generally undertaken in large regions, such as metropolitan areas. Frequently it also uses macro temporal scales, as in before-and-after analysis. This analysis instead looks at micro scales, both spatial and temporal. The study area is the University of California, Santa Barbara campus and the adjoining student community of Isla Vista. Only accessibility to eateries was analyzed. Data were obtained from OpenStreetMap. Businesses closing in the late evening and opening ...
indicatrix.org
Copyright—Indicatrix
http://www.indicatrix.org/copyright
This site is licensed under a Creative Commons Attribution-NonCommercial 4.0 (nternational license. Permissions beyond the scope of this license may be available here. I’m not in general opposed to commercial uses of my content, but I like to discuss any potential commercial use. By Matthew Wigginton Conway, 2011–2015.