Besides the already famous Ghost Cities, China also has a growing number of copycat towns, or 'Copy & Paste Cities' as I like to call them.
Thursday, September 18, 2014
Given a list of places you want to go, what is the shortest possible route that visits each place and returns to the place where you first started? This is the basic idea behind the Travelling Salesman Problem (TSP).
Most of us have faced this problem before, either when planning a trip with many cities/tourist attractions, or maybe when dealing with more complex stuff like optimizing public transport systems, air line operations, shipping routes etc. Computationally speaking, this used to be a difficult problem, but things are changing and the number of programs to solve the TSP is increasing.
Todd W. Schneider has created a brilliant code to build interactive solutions to the Traveling Salesman Problem using R and Shiny . In this post here, you may read in detail how the simulation process works and you may also play trying to find the shortest route through some world cities or through all of the US State capitals. (ht Tariq Khokhar).
[image credit: Todd W. Schneider]
Tuesday, September 16, 2014
Will the future of urban transportation look like this? I don't think so, but certainly I am not the best person to write about this topic.
If you are interested in how autonomous vehicles might change urban transportation, though, I would strongly recommend the reading of three pieces published in the Atlantic Cities (1, 2, 3). Also, you might like the work of Paul Newman and his collaborators at Oxford Mobile Robotics Group, which takes a more technical perspective.
Monday, September 15, 2014
Tuesday, September 9, 2014
Nice data visualization on gender differences in GitHub repository ownership, by Alyssa Frazee. The green colors represent the share of GitHub repositories owned by (most likely) women in each programming language.
The interactive version is here!
click on the image to enlarge it
[image credit: Alyssa Frazee]
Friday, September 5, 2014
- Jean-Paul Sartre Rejected the Nobel Prize in Literature in 1964
- Write your own academic sentences with a little help of this tool
- New study finds that high-quality traffic-free routes encourage more walking+cycling (via TSU)
- Stata daily, a nice blog with tips, tricks and tools for stata users (via Cesar Hidalgo)
- The Milky Way is a suburb (via MR)
- The Big Migration Debate
- The Journal Of Unlikely Cartography Issue 9, June 2014
- A short video on modeling the emergent patterns of climate change, by Gavin Schmidt
[Image Credit: Moscow street in the end of XIX century, via HSC]