273 search results for "animation"

Spatial segregation in cities – An explanation by a neural network model (Demographics & neural network)

September 25, 2012
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Spatial segregation in cities – An explanation by a neural network model (Demographics & neural network)

Preferential attachment for network

September 15, 2012
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I am currently taking the networked life course on Coursera.org offered by Professor Michael Kearns from the University of Pennsylvania.  I have been took several courses including machine learning, natural language processing since the platf...

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Kendall’s function for copulas

September 12, 2012
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Kendall’s function for copulas

As mentioned in the course on copulas, a nice tool to describe dependence it Kendall's cumulative function. Given a random pair with distribution  , define random variable . Then Kendall's cumulative function isGenest and Rivest (1993) intr...

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Integrate data and reporting on the Web with knitr

September 11, 2012
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Today's guest post comes from Yihui Xie, author of the knitr package — ed. Hi, this is Yihui Xie, and I'm guest posting on the Revolutions blog to talk about one aspect of the knitr package: how we can integrate data analysis and reporting in R with the Web. This post includes both the work that has been done...

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Progress bars in R using winProgressBar

September 10, 2012
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Progress bars in R using winProgressBar

Using progress bars in R scripts can provide valuable timing feedback during development and additional polish to final products. winProgressBar and setWinProgressBar are the primary functions for creating progress bars in R. Progress bars, and progress indicators in general, are relatively uncommon in R programming. This makes sense, as they can add bloat and, being The post Progress...

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R Package Vignettes with Markdown

September 10, 2012
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What is the best resource to learn an R package? Many R users know the almighty question mark ? in R. For example, type ?lm and you will see the documentation of the function lm. If you know nothing about a package, you can take a look at the HTML help...

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Animated Images of Arctic Sea Ice Extent Decline

September 5, 2012
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Animated Images of Arctic Sea Ice Extent Decline

This post shows how to download and animate a series of Arctic Sea Ice Extent images using R and the animation package. In my previous post, I showed how to download the daily arctic sea ice extent  data and generate … Continue reading →

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Three ways of visualizing the growth of Walmart

August 30, 2012
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Three ways of visualizing the growth of Walmart

It's a wonderful thing when people make interesting data sets available to the public. When Thomas Jones wrote a paper in Econometrics about the growth of US retail giant Walmart, he made the data he collected about every Walmart store opening in history (location and date) available to the public. Since then, several people have used different techniques to...

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Are career motivations changing?

August 28, 2012
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Are career motivations changing?

The German news magazine Der Spiegel published a series of articles around career developments. The stories suggest that career aspirations of young professionals today are somewhat different to those of previous generations in Germany. Apparen...

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Sigma motion visual illusion in R

August 21, 2012
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Sigma motion visual illusion in R

Michael Bach, who is a professor and vision scientist at the University of Freiburg, maintains a fascinating site about visual illusions. One visual illusion really surprised me: the sigma motion. The sigma motion displays a flickering figure of bla...

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