Monthly Archives: May 2013

Why Blog?

May 2, 2013
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Why Blog?

The Blog Review ProcessA series of events in my life have lead me to reconsider the value of blogging.The Back StoryShort story: I got fired.Long story: Recently I was hired to write occasional blog posts for Quandl. They probably figured that due to m...

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Writing from R to Excel with xlsx

May 1, 2013
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Writing from R to Excel with xlsx

Paul Teetor, who is doing yeoman’s duty as one of the organizers of the Chicago R User Group (CRUG), asked recently if I would do a short presentation about a “favorite package”.  I picked xlsx, one of the many packages that provides a bridge between spreadsheets and R.  Here are the slides from my presentation

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NYT uses R to investigate NFL draft picks

May 1, 2013
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NYT uses R to investigate NFL draft picks

Last week, the New York Times published online an interactive tool to explore NFL draft picks, revealing the fact that there's not much relationship between an early pick and the star performers in the season: Kevin Quealy, graphics editor at the NYT, detailed the process behind creating this graphic on his chartsnthings blog. He and others on the graphics...

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TV shows rated by episode as a Shiny App

May 1, 2013
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TV shows rated by episode as a Shiny App

A few days ago there was an interesting R based article by diffuseprior on the decline and fall in the quality of The Simpsons The author scraped results from GEOS, an online survey of TV programs, and applied the R package changepoint to offer an analysis of the show over time This seemed a candidate

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R for dummies

May 1, 2013
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R for dummies

I already mentioned R for dummies a while ago on the ‘Og and never got around to read it from cover to back. Now that I am reduced to a dummy state with too much free time!, I can produce a full review of the book. R for dummies was written by two Belgian statistics

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…start using Sweave, from scratch!

May 1, 2013
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…start using Sweave, from scratch!

INTRODUCTION Sweave is nothing more, nothing less than the best way R can connect with a text editor, in this case LaTeX. So you don’t know anyting about LaTeX? neither did I 8 months ago… The hyperlinks in this post … Sigue leyendo →

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R creates d3/javascript charts in Ipython Style Notebook

May 1, 2013
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I am not sure I have ever done a post like this, but I was so blown away I had to do this post simply to embed this amazing Youtube video from the author of the R packages rCharts and slidify.  Watch this screencast as he creates d3/raphael charts...

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Book Review: The R Book, Second Edition (2013)

May 1, 2013
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The first edition of The R Book by Michael J. Crawley was an ambitious work, but managed to be slightly rubbish due to the atrocious typographical layout of the original book. The good news is that the new 2nd edition, released in 2013, has a substanti...

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A Crash Course in R

May 1, 2013
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This code has been kindly contributed by Robin Edwards

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Color analysis of Flickr images

May 1, 2013
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Color analysis of Flickr images

Since I’ve seen this beautiful color wheel visualizing the colors of Flickr images, I’ve been fascinated with large scale automated image analysis. At the German Market Research association’s conference in late April, I presented some analyses that went in the same direction (click to enlarge): On the image above you can see the color

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