Monthly Archives: June 2012

R 2.15.1 includes performance improvements inspired by dataframe package

June 22, 2012
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The latest update to open-source R, R 2.15.1, was released this morning. (You can grab sources now, and binary versions will hit the CRAN mirrors over the next couple of days.) In addition to several new features and bug fixes (including the new globalVariables function, which will be a boon to package developers), this update also includes some significant...

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R and the web (for beginners), Part II: XML in R

June 22, 2012
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This second post of my little series on R and the web deals with how to access and process XML-data with R. XML is a markup language that is commonly used to interchange data over the Internet. If you want to access some online data over a webpage's AP...

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Plotting non-overlapping circles…

June 22, 2012
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Plotting non-overlapping circles…

It's holiday today in Sweden, so happy Midsummer to everyone!!! (I know, it's delayed)No work for me, so I checked up the latest XKCD:Gorgeous, right? So I decided to see if I could make something similar - but being lazy, I didn't feel like drawing al...

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Analytics with SAP and R (Windows version)

Analytics with SAP and R (Windows version)

My good friend and programming guru Piers Harding wrote a blog called Analytics with SAP and R where he showed us how to link the wonderful worlds of R and SAP. Yes...SAP...not SAP HANA...but the good old NetWeaver...Piers build the RSAP extension usin...

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When the going gets tough…

June 22, 2012
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When the going gets tough…

Getting closer to my personal Euro2012 derby: England v Italy. I find amusing that both sets of media think that their respective team have been gifted a good tie. The English are very happy to have avoided Spain, while the Italians don't mind not...

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eoda publishes interactiveGGPLOT – interactive graphics with ggplot2

June 22, 2012
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One of Rs great strengths compared to other statistic solutions or programming languages ​​is the amount of possibilities for creating well-designed publication-quality plots. Almost all plot types can be created with any amount of fine tuning. R works on small data sets as well as on big data. In addition to Rs base-graphics various add-on

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Two new, important books on R

June 22, 2012
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Two new, important books on R

Two books were recently published that are sure to help R grow even faster. R has a reputation, partially deserved, for being hard to learn.  These books will help.  The first makes learning easier, the second can make learning less necessary for initiates. I have not yet touched either book. R for Dummies The authors … Continue reading...

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Video: Getting staRted with R: An accelerated primer by Lyndon Walker – Melbourne R Users

June 22, 2012
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Video: Getting staRted with R: An accelerated primer by Lyndon Walker – Melbourne R Users

This post shares the video from a talk presented on June 20 2012 by Dr Lyndon Walker (see Meetup page). The talk was titled “Getting staRted with R: An accelerated primer”. To quote the outline of the talk : R … Continue reading →

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Nonlinear systems

June 21, 2012
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Nonlinear systems

There is a long standing debate if financial systems are truly random or contain some structure. From the study of non-linear dynamical systems and chaos one finds it is possible that even perfectly deterministic systems can appear to be random. … Continue reading →

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Learning a new language

June 21, 2012
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Learning a new language

It had been a very long time since I’d tried to learn a new programming language. I started C in 1987, S in 1992, and Perl in 1997, but nothing really new in the subsequent 15 years. A friend now has me doing D, wanting to find time to learn ruby, and, most recently, playing

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