ENTRIES TAGGED "mapping"
Street View Tiles Hacks, Policy Simulation, Map Tile Toolbox, and Connected Sensor Device HowTo
- HyperLapse — this won the Internet for April. Everyone else can go home. Check out this unbelievable video and source is available.
- Housing Simulator — NZ’s largest city is consulting on its growth plan, and includes a simulator so you can decide where the growth to house the hundreds of thousands of predicted residents will come from. Reminds me of NPR’s Budget Hero. Notice that none of the levers control immigration or city taxes to make different cities attractive or unattractive. Growth is a given and you’re left trying to figure out which green fields to pave.
- Converting To and From Google Map Tile Coordinates in PostGIS (Pete Warden) — Google Maps’ system of power-of-two tiles has become a defacto standard, widely used by all sorts of web mapping software. I’ve found it handy to use as a caching scheme for our data, but the PostGIS calls to use it were getting pretty messy, so I wrapped them up in a few functions. Code on github.
- So You Want to Build A Connected Sensor Device? (Google Doc) — The purpose of this document is to provide an overview of infrastructure, options, and tradeoffs for the parts of the data ecosystem that deal with generating, storing, transmitting, and sharing data. In addition to providing an overview, the goal is to learn what the pain points are, so we can address them. This is a collaborative document drafted for the purpose of discussion and contribution at Sensored Meetup #10. (via Rachel Kalmar)
Mozilla Payments, Firefox Cleans Cookies, Lost: One Web Please Return to Those Who Love It, and 3D from Spaaaaace
- How We Lost the Web (Anil Dash) — excellent talk about the decreasing openness and vanishing shared culture of the web. See also David Weinberger’s transcription.
- 3D From Space Shuttle Footage? — neat idea! Filming in 3D generally requires two cameras that are separated laterally, to create the parallax effected needed for stereoscopic vision. Fortunately, videos shot from Earth orbit can be converted to 3D without a second camera, because the camera is constantly in motion.
Hi-Res Long-Distance, Robot Ants, Data Liberation, and Network Neutrality
- Millimetre-Accuracy 3D Imaging From 1km Away (The Register) — With further development, Heriot-Watt University Research Fellow Aongus McCarthy says, the system could end up both portable and with a range of up to 10 Km. See the paper for the full story.
- Robot Ants With Pheromones of Light (PLoS Comp Biol) — see also the video. (via IEEE Spectrum’s AI blog)
- tabula — open source tool for liberating data tables trapped inside PDF files. (via Source)
- There’s No Economic Imperative to Reconsider an Open Internet (SSRN) — The debate on the neutrality of Internet access isn’t new, and if its intensity varies over time, it has for a long while tainted the relationship between Internet Service Providers (ISPs) and Online Service Providers (OSPs). This paper explores the economic relationship between these two types of players, examines in laymen’s terms how the traffic can be routed efficiently and the associated cost of that routing. The paper then assesses various arguments in support of net discrimination to conclude that there is no threat to the internet economy such that reconsidering something as precious as an open internet would be necessary. (via Hamish MacEwan)
Island Traps, Apolitical Technology, 3D Printing Patent Suits, and Disk-Based Graph Tool
- Trap Island — island on most maps doesn’t exist.
- Why I Work on Non-Partisan Tech (MySociety) — excellent essay. Obama won using big technology, but imagine if that effort, money, and technique were used to make things that were useful to the country. Political technology is not gov2.0.
- 3D Printing Patent Suits (MSNBC) — notable not just for incumbents keeping out low-cost competitors with patents, but also (as BoingBoing observed) Many of the key patents in 3D printing start expiring in 2013, and will continue to lapse through ’14 and ’15. Expect a big bang of 3D printer innovation, and massive price-drops, in the years to come. (via BoingBoing)
- GraphChi — can run very large graph computations on just a single machine, by using a novel algorithm for processing the graph from disk (SSD or hard drive). Programs for GraphChi are written in the vertex-centric model, proposed by GraphLab and Google’s Pregel. GraphChi runs vertex-centric programs asynchronously (i.e changes written to edges are immediately visible to subsequent computation), and in parallel. GraphChi also supports streaming graph updates and removal of edges from the graph.
Vannevar Bush, Topic Transparency, Ancient Maps, and Concussion Sensors
- As We May Think (Vannevar Bush) — incredibly prescient piece he wrote for The Atlantic in 1945.
- Transparency and Topic Models (YouTube) — a talk from DataGotham 2012, by Hanna Wallach. She uses latent Dirichlet allocation topic models to mine text data in declassified documents where the metadata are useless. She’s working on predicting classification durations (AWESOME!). (via Matt Biddulph)
- Slippy Map of the Ancient World — this. is. so. cool!
- Technology in the NFL — X2IMPACT’s Concussion Management System (CMS) is a great example of this trend. CMS, when combined with a digital mouth guard, also made by X2, enables coaches to see head impact data in real-time and asses concussions through monitoring the accelerometers in a players mouth guard. That data helps teams to decide whether to keep a player on the field or take them off for their own safety. Insert referee joke here.
LIDAR for Mapping, Homebrew CoverFlow, Browser Exploitation, and Dependency Injection
- Wearable LIDAR Sensors for Mapping (BBC) — made at MIT from commodity hardware, The system is still a prototype, but when tested in closed hallways without any Global Positioning System (GPS) signal, it was able to precisely map the environment as the user was moving through it. (via Andrew Turner)
- Coverflow (Github) — an iPhone project implementing Coverflow using iOS 6 UICollectionViews and a custom UICollectionViewLayout [...] I think the interpolation technique I use is rather neat and allows you to easily adjust the layout and behavior of the layout. (via Jonathan Wight)
- BEEF Project — The Browser Exploitation Framework. It is a penetration testing tool that focuses on the web browser.
- Dagger (Github) — A fast dependency injector for Android and Java. (via Chris Aniszczyk)
NeoVictorian Computing, Participatory Budgeting, Micro Thrusters, and Geopositioning Accuracy
- NeoVictorian Computing (Mark Bernstein) — read this! I think we all woke up one day to find ourselves living in the software factory. The floor is hard, from time to time it gets very cold at night, and they say the factory is going to close and move somewhere else. [...] The Arts & Crafts movement failed in consumer goods, but it could succeed in software. (via James Governor)
- Participatory Budgeting — research shows participation is more effective than penalties in taxation compliance. Participation is more effective than penalties in almost everything.
- MIT-Developed Microthrusters — a flat, compact square — much like a computer chip — covered with 500 microscopic tips that, when stimulated with voltage, emit tiny beams of ions. Together, the array of spiky tips creates a small puff of charged particles that can help propel a shoebox-sized satellite forward. You say satellite, but it’s only a matter of time until this powers a DIY RC rocket with a camera payload. (via Hacker News)
- Yelp Checkins to Measure Geopositioning Accuracy Across Phones — By analyzing millions of data points, we can easily see how, on average, different platforms perform. iPhones consistently have the most accurate positioning, with a fairly small accuracy radius. Android phones are often inaccurate, but reliably reported that inaccuracy. And finally, iPods using Wi-Fi positioning proved the least accurate and usually reported incorrect accuracy radii.
Reading Minds, Satellites in the Cloud, Units for Risk, and Valuing Autism
- Reconstructing Visual Experiences (PDF) — early visual areas represent the information in movies. To demonstrate the power of our approach, we also constructed a Bayesian decoder by combining estimated encoding models with a sampled natural movie prior. The decoder provides remarkable reconstructions of the viewed movies. These results demonstrate that dynamic brain activity measured under naturalistic conditions can be decoded using current fMRI technology.
- Earth Engine — satellite imagery and API for coding against it, to do things like detecting deforestation, classifying land cover, estimating forest biomass and carbon, and mapping the world’s roadless areas.
- Microlives — 30m of your life expectancy. Here are some things that would, on average, cost a 30-year-old man 1 microlife: Smoking 2 cigarettes; Drinking 7 units of alcohol (eg 2 pints of strong beer); Each day of being 5 Kg overweight. A chest X-ray will set a middle-aged person back around 2 microlives, while a whole body CT-scan would weigh in at around 180 microlives.
- Autistics Need Opportunities More Than Treatment — Laurent gave a powerful talk at Sci Foo: if the autistic brain is better at pattern matching, find jobs where that’s useful. Like, say, science. The autistic woman who was delivering mail became a research assistant in his lab, now has papers galore to her name for original research.
Creative Business, News Design, Google Earth Glitches, and Data Distortion
- Patton Oswalt’s Letters to Both Sides — You guys need to stop thinking like gatekeepers. You need to do it for the sake of your own survival. Because all of us comedians after watching Louis CK revolutionize sitcoms and comedy recordings and live tours. And listening to “WTF With Marc Maron” and “Comedy Bang! Bang!” and watching the growth of the UCB Theatre on two coasts and seeing careers being made on Twitter and Youtube. Our careers don’t hinge on somebody in a plush office deciding to aim a little luck in our direction. (via Jim Stogdill)
- Headliner — interesting Guardian experiment with headlines and presentation. As always, reading the BERG designers’ notes are just as interesting as the product itself. E.g., how they used computer vision to find faces and zoom in on them to make articles more attractive to browsing readers.
- Google Earth Glitches — where 3d maps and aerial imagery don’t match up. (via Beta Knowledge)
- Campbell’s Law — The more any quantitative social indicator is used for social decision-making, the more subject it will be to corruption pressures and the more apt it will be to distort and corrupt the social processes it is intended to monitor. (via New York Times)