A Distributed Denial of Service (DDoS) attack attempts to disable a site or web service by sending a ton of requests from multiple sources. Essentially, the server buckles under the pressure. Sometimes this is done to silence sites that the attackers disagree with, or they might try to take advantage of business backends.
To make it easier to trace the threads of music history, we’ve created an interactive map detailing the evolution of western dance music over the last 100 years. The map shows the time and place where each of the music styles were born and which blend of genres influenced the next.
There's a cartogram in the background and lines connect countries and styles. It reminds me of those dance step charts with the feet on them.
Digital artist Lauri Vanhala animated a day of maritime traffic in the Baltic Sea.
Here's a marine traffic and accident visualization that I created for the Baltic Marine Environment Protection Commission. The video was shown last week in a conference where the ministers of environment in the region of Baltic Sea and a bunch of other professionals were discussing how to protect the vulnerable and polluted sea in the future.
The background music feels cinematic but not surprising given the audience. I particularly like the highlighting and annotation sync around the one-minute mark.
In probability theory, the central limit theorem (CLT) states that, given certain conditions, the mean of a sufficiently large number of independent random variables, each with a well-defined mean and well-defined variance, will be approximately normally distributed.
In distributed denial-of-service attack a bunch of machines make a bunch of requests to a server to make it buckle under the pressure. There was recently an attack on VideoLAN's download infrastructure. Here's what it looked like.
We saw a mapped version of this data a while back, but Bolides takes a time-based approach. A bar chart shows the number and volume of meteorites that have been seen over time, and on the initial load, you get to watch the meteorites fall, one bright orange fireball at a time.
On Wikipedia, there are constant edits by people around the world. You can poke your head in on the live recent edits via the IRC feed from Wikimedia. Stephen LaPorte and Mahmoud Hashemi are scraping the anonymous edits, which include IP addresses (which can be easily mapped to location), and naturally, you can see them pop up on a map.
Circles represent the number of deaths in a city, and the larger a circle the higher the count. A bar chart on the bottom shows the data over time and serves as a navigation device. Click on a day or a location, and the names of victims appear on the right with a link to the related news story.
See also: Periscopic's work on the topic, which now has filters and is updated in real-time.
Also: episodes 487 and 488 of This American Life, which focus on Harper High School in Chicago, where gang violence is a daily concern.
From NOAA, an animation showing a wave of cold during the Martin Luther King Jr. holiday weekend last month:
A drop in the jet stream sent temperatures across the United States plummeting over the Martin Luther King Jr Holiday weekend. The pronounced change in temperatures can be seen in this weather data from NOAA/NCEP's Real-Time Mesoscale Analysis. Areas colored blue are below freezing. The diurnal cycle of heating and cooling can be seen over time, but the pattern is clear: much of the U.S. is pretty cold.
We've all seen rain maps for a sliver of time. Screw that. I want to see the total amount of rainfall over a ten-year period. Bill Wheaton did just that in the video above, showing cumulative rainfall between 1960 and 1970. The cool part is that you see mountains appear, but they're not actually mapped.
The hillshaded terrain (the growing hills and mountains) is based on the rainfall data, not on actual physical topography. In other words, hills and mountains are formed by the rainfall distribution itself and grow as the accumulated precipitation grows. High mountains and sharp edges occur where the distribution of precipitation varies substantially across short distances. Wide, broad plains and low hills are formed when the distribution of rainfall is relatively even across the landscape.
This video of the Boston metropolitan area reveals the geographic distribution of political donations made by individuals throughout 2012. We identify two types of temporal bursts of campaign contributions. We call both "moneybombs" because they reveal a temporal clustering. The first type occurs when many small donations are given on the same day to a candidate. We call this a grassroots moneyb omb. The second are bursts of extremely large donations, that take advantage of campaign finance laws and allow individuals to donate more than the traditional $5,000 limit. We call this the Joint Committee moneybomb.
Like in the first project, the narration provides a clear view of the data in front of you. There are also videos for just presidential donations and Republican and Democratic donations.
In the animation (see below) the least travelled routes begin to fade out after about 15 seconds - "like a graphic equaliser," says collaborator Andrew Huddart, also at City University. Around the 1-minute mark, structure emerges from the chaos and three major systems become clear: routes around, and through, the lozenge-shaped Hyde Park in the west, and commutes in and out of King's Cross St Pancras in the north and between Waterloo and the City in the east.
Each arc represents a trip from point A to point B (obviously not a true path or we'd see roads), and flow direction indicates which way people went the most between the two. [via The Guardian]
The Forest of Advocacy is a series of animations that explores the political contribution patterns among eight organizations, such as Bain Capital, Goldman Sachs, and Harvard Business School.
These visualizations provide a dynamic look at the partisan tilt of giving within organizations. For each organization, individuals are characterized as points sketching out a line over time. The X axis is time, and the Y axis represents the net partisan tilt of contributions over the preceding 6 months. Over the decades, one sees lines sketched out, reflecting the partisanship of individuals over time. For each organization, we also provide the net contributions of the entire organization, and the names of biggest Democratic, Republican, and "bipartisan" contributors (the individual with the highest product of Democratic and Republican contributions).
At the core, each animation is a time series chart, but the aesthetic and animation, which is narrated, provides for a more organic feel. In particular, the movements of people, represented by squares shifting straight across or up and down, makes it easy to see consistent and not so consistent contributions. [Thanks, Mauro]
Artist Gustavo Sousa used the Olympic rings as data indicators for statistics like obesity, homicides, and number of billionaires. Each ring represents a continent, and the larger the ring, the larger the value. Simple and an interesting metaphor shift.
The "Latest" and "3hrs Previous" visualizations depict water motion corresponding to a snapshot of lake currents at the present time and three hours previous to the present time. Lake currents can change rapidly with changing wind conditions.
Surface currents tend to follow the wind direction more closely than currents at depth. Depth-averaged currents represent the average water motion from surface to bottom and tend to follow shoreline and bottom contours.
The default map is semi-live, but you can also see flows for previous months. For example, the patterns during February 2011 are kinda cool, with a lot of swirling and well-defined currents.
Animator and illustrator Rufus Blacklock animated 60 years of Formula One race car design. The outline of each year's car morphs from design to design, the engine shifts location, and the steering wheel changes shape. The video as a whole is pretty sexy.
He also took a look at just the steering wheel's evolution. I'm almost certain the next iteration will be non-existent in the future, where only robots race. Speaking of which, whatever happened to Robot Wars? That was good entertainment.
At any moment, about 60 percent of the earth is covered by clouds, which have a huge influence on the climate. An animated map showing a year of cloud cover suggests the outlines of continents because land and ocean features influence cloud patterns.