Monthly Archives: June 2012

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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Background to my book project “Empirical Software Engineering with R”

June 21, 2012
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This post provides background information that can be referenced by future posts. For the last 18 months I have been working in fits and starts on a book that has the working title “Empirical Software Engineering with R”. The idea is to provide broad coverage of software engineering issues from an empirical perspective (i.e., the

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Confidence intervals with tiers: functions for between-subjects (independent measures) ANOVA

June 21, 2012
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Confidence intervals with tiers: functions for between-subjects (independent measures) ANOVA

In a previous post I showed how to plot difference-adjusted CIs for between-subjects (independent measures) ANOVA designs (see here). The rationale behind this kind of graphical display is introduced in Chapter 3 of Serious stats (and summarized in my earlier blog post). In a between-subjects – or in indeed in a within-subjects (repeated measures) – design

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My first "ChemoSpec" spectra

June 21, 2012
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My first "ChemoSpec" spectra

I’ve been this week trying to import some spectra to ChemoSpec (R Package), at the beginning I had problems generating the “csv”  files, and the function getManyCsv did not recognize the files. I did not have properly configured the regional...

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