Monthly Archives: July 2010

Pie Charts in ggplot2

July 29, 2010
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Pie Charts in ggplot2

...and other isomorphic data shape presentations...The Pie Chart has been widely criticized in recent times by statisticians.  Edward Tufte goes as far as to call this the "prevailing orthodoxy."  The reasons generally cited:The rel...

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A free book on probability and statistics with R

July 29, 2010
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G Jay Kerns has published a 400+ page introductory text on Probability and Statistics. All of the examples and illustrations are done using R (as Jay puts it, "The people at the party are Probability and Statistics; the handshake is R") so if you want to brush up on your probability and learn R at the same time, this...

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Bootstrap, strap-on, anal-yzing… statistics is getting weirder by the moment

July 29, 2010
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Bootstrap, strap-on, anal-yzing… statistics is getting weirder by the moment

I have spent the better portion of the day trying to get a bootstrap working. I have adapter a pre-written bootstrap function, but I wanted to use a generic function, mostly for reaping fame and glory. My hypothesis was that writing a hand-written, unoptimized function will consume more computer time than the generic, presumably optimized,

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Taking R to the Limit: Parallelization

July 29, 2010
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Taking R to the Limit: Parallelization

Video, slides and code of the talk “Taking R to the Limit: Parallelization” by Ryan Rosario at the Los Angeles area R Users Group in July 2010 as follows. Slides: R code: here. Video: If you have a question to … Continue reading →

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Notes from useR! 2010

July 29, 2010
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Notes from useR! 2010

R is a free software environment for statistical computing and graphics, used by a growing number of economists, engineers, and data analysts every day at Google. We’ve even published our R Style Guide on Google Code. The R community has...

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Notes from useR! 2010

July 29, 2010
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Notes from useR! 2010

R is a free software environment for statistical computing and graphics, used by a growing number of economists, engineers, and data analysts every day at Google. We’ve even published our R Style Guide on Google Code. The R community has...

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Taking R to the Limit, Part I – Parallelization in R

July 28, 2010
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Taking R to the Limit, Part I – Parallelization in R

Tuesday night I had the opportunity to present on high performance computing in R, and the Los Angeles R Users’ Group. There was so much to talk about that I had to split my talk into two parts. The first part was parallelization and the second ...

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Blogging about R – presentation and audio

July 28, 2010
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At the useR!2010 conference I had the honor of giving a (~15 minute) talk titled “Blogging about R”. The following is the abstract I submited, followed by the slides of the talk and the audio file of a recording I made of the talk (I am sad it got a bit of “hall echo”, but it’s still listenable…) P.S:...

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RUG Introduction: Los Angeles area R Users Group

July 28, 2010
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RUG Introduction: Los Angeles area R Users Group

A nice group of people from academia and industry meeting about once a month at UCLA. Attendance is usually 30-40, but gradually increasing (also about 300 registered members). If you’d like to join, visit the group’s website: http://www.meetup.com/LAarea-R-usergroup/, you’ll find … Continue reading →

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IPSUR book used LyX-Sweave

July 28, 2010
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Jay Kerns wrote a book titled "Introduction to Probability and Statistics Using R" or IPSUR for short. He has put up a web site for the book and Rcmdr plugin. There are at least two very important points from my side (I did not read the book, yet): 1. ...

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