Blog Archives

SMS analysis (coming from an Android smartphone or an IPhone)

July 7, 2012
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SMS analysis (coming from an Android smartphone or an IPhone)

At first, this post was intended to describe how to manipulate dates with R but, as the idea was coming from the question of one of my students who wanted to analyze his SMS, I thought that I might as well also explain the whole analysis process... Using my new smartphone (that I started to

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First R meeting in Bordeaux, France

June 7, 2012
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The program of the first R meeting that will be held in Bordeaux (France), the 2nd and 3rd of July, is now available at http://r2012.bordeaux.inria.fr/programme.html. It includes special sessions about mixed models, visualization, classification, data ...

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What does this package look like?

May 1, 2012
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What does this package look like?

In this post, I give a very simple trick to understand the way a package is organized, which functions are included in and how these functions depend from each others. The idea has been brought by one of my student, Soraya, who is currently working in a very hostile environment, surrounded by true geeks. However,

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Use file.choose to customize output filenames in R functions

April 5, 2012
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In this post, I want to address the following issue: several data files with a common trame have to be dealt with by an R function. The function should export files (such as images or data files or any other file type). I explain how to create filenames such that the function automatically exports files in the same directory...

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BoRdeaux (France): the first French R useR conference

March 30, 2012
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The first French R useR conference will be held in Bordeaux on July 2-3. The Rencontres R are conceived as a place to present and share ideas on using the R statistical software. This meeting is designed to be a nationwide event where various topics belong, such as graphical tools, applied statistics, biostatistics, bayesian statistics,

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Gini index and Lorenz curve with R

February 23, 2012
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Gini index and Lorenz curve with R

You can do anything pretty easily with R, for instance, calculate concentration indexes such as the Gini index or display the Lorenz curve (dedicated to my students). Although I did not explain it during my lectures, calculating a Gini index or displaying the Lorenz curve can be done very easily with R. All you have

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