Fantastic Facebook Info-graphics

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As we all know, people all over the world use Facebook to stay connected with friends and family. You meet someone. You friend him or her on Facebook to keep in touch. These friendships began within universities, but today there are friendships that connect countries.

Facebook engineer Paul Butler visualizes these connections:

“I defined weights for each pair of cities as a function of the Euclidean distance between them and the number of friends between them. Then I plotted lines between the pairs by weight, so that pairs of cities with the most friendships between them were drawn on top of the others. I used a color ramp from black to blue to white, with each line’s color depending on its weight. I also transformed some of the lines to wrap around the image, rather than spanning more than halfway around the world.”

In other words, for each pair of countries with a friend in one country and a friend in the other, a line was drawn. The more friends and distance between two countries, the brighter the lines on a black-blue-white color scale. The “stronger” connections were drawn on top, so they are more visually prominent.

Most interesting though, I think, are not the places that are lit up, but the relatively dark ones, where Facebook has yet to reach. There are still huge sections of complete black.

via:  www.flowingdata.com

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