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Take a look at this spinning disk. Do you see colors?

I see two colored regions: ochre bands about 1/3 and 2/3 of the way out, each surrounded by narrow olive bands. But this image is actually monochrome black and white: it's just a rotating version of this image:

The R online training site DataCamp has created an infographic comparing R, SAS and SPSS. Provocatively titled "Statistical Language Wars", the infographic compares the history, purpose, ease of learning, popularity and marketability of skills in each of the three systems. Here's a small detail (click for the full chart):

To play in a World Cup national soccer team, a player must be a citizen of that country. But most World Cup players don't regularly play in the nation of their World Cup team. Some hold dual citizenship; others simply play for a league team in a foreign country where citizenship rules don't apply. 

by Ilya Kipnis

In this post, I will demonstrate how to obtain, stitch together, and clean data for backtesting using futures data from Quandl. Quandl was previously introduced in the Revolutions Blog.  Functions I will be using can be found in my IK Trading package available on my github page.

Earlier this month, the results of the 15th annual KDnuggets Software Poll were released and R's popularity continues to grow. 38.5% of respondents reporting using open source R in the last 12 months, up from 37.4% in 2013.

I flagged this video for my Friday post earlier this week, and it's already everywhere on the Internet. But it's so awesome that I'm still going to post it. If by chance you haven't seen it yet, this guy was stuck overnight in Las Vegas airport and filmed this music video on his iPhone.

Ever since the days of digital film processing, cinematographers have had free rein to recolor their shots in any way they like, without the hassle of chemical developing systems from the old film days. The Coen Brothers' Oh Brother Where Art Thou was the first Hollywood film to use this process, giving the film a washed-out yellow hue reminiscent of the films Deep South setting.