Blog Archives

Comparison of ave, ddply and data.table

August 25, 2011
By
Comparison of ave, ddply and data.table

A guest post by Paul Hiemstra. ———— Fortran and C programmers often say that interpreted languages like R are nice and all, but lack in terms of speed. How fast something works in R greatly depends on how it is implemented, i.e. which packages/functions does one use. A prime example, which shows up regularly on

Read more »

Calling R lovers and bloggers – to work together on “The R Programming wikibook”

June 20, 2011
By
Calling R lovers and bloggers – to work together on “The R Programming wikibook”

This post is a call for both R community members and R-bloggers, to come and help make The R Programming wikibook be amazing. The R Programming wikibook is not just another one of the many free books about statistics/R, it is a community project which aims to create a cross-disciplinary practical guide to the R programming language.  Here is

Read more »

Engineering Data Analysis (with R and ggplot2) – a Google Tech Talk given by Hadley Wickham

June 17, 2011
By
Engineering Data Analysis (with R and ggplot2) – a Google Tech Talk given by Hadley Wickham

It appears that just days ago, Google Tech Talk released a new, one hour long, video of a presentation (from June 6, 2011) made by one of R’s community more influential contributors, Hadley Wickham. This seems to be one of the better talks to send a programmer friend who is interested in getting into R.

Read more »

How to upgrade R on windows 7

April 15, 2011
By

Background – time to upgrade to R 2.13.0 The news of the new release of R 2.13.0 is out, and the R blogosphere is buzzing. Bloggers posting excitedly about the new R compiler package that brings with it the hope to speed up our R code with up to 4 times improvement. So it is time

Read more »

Article about plyr published in JSS, and the citation was added to the new plyr (version 1.5)

April 11, 2011
By
Article about plyr published in JSS, and the citation was added to the new plyr (version 1.5)

The plyr package (by Hadley Wickham) is one of the few R packages for which I can claim to have used for all of my statistical projects. So whenever a new version of plyr comes out I tend to be excited about it (as was when version 1.2 came out with support for parallel processing)

Read more »

Beeswarm Boxplot (and plotting it with R)

March 10, 2011
By
Beeswarm Boxplot (and plotting it with R)

(The image above is called a “Beeswarm Boxplot” , the code for producing this image is provided at the end of this post) The above plot is implemented under different names in different softwares. This “Scatter Dot Beeswarm Box Violin – plot” (in the lack of an agreed upon term) is a one-dimensional scatter plot

Read more »

Book review: 25 Recipes for Getting Started with R

February 24, 2011
By
Book review: 25 Recipes for Getting Started with R

Recently I was asked by O’Reilly publishing to give a book review for Paul Teetor new introductory book to R.  After giving the book some attention and appreciating it’s delivery of the material, I was happy to write and post this review.  Also, I’m very happy to see how a major publishing house like O’Reilly is producing more and

Read more »

How to label all the outliers in a boxplot

January 27, 2011
By
How to label all the outliers in a boxplot

In this post I offer an alternative function for boxplot, which will enable you to label outlier observations while handling complex uses of boxplot.

Read more »

Call for proposals for writing a book about R (via Chapman & Hall/CRC)

January 20, 2011
By

Rob Calver wrote an interesting invitation on the R mailing list today, inviting potential authors to submit their vision of the next great book about R. The announcement originated from the Chapman & Hall/CRC publishing houses, backed up by an impressive team of R celebrities, chosen as the editors of this new R books series,

Read more »

R-bloggers in 2010: Top 14 R posts, site statistics and invitation for sponsors

January 1, 2011
By
R-bloggers in 2010: Top 14 R posts, site statistics and invitation for sponsors

A year ago (on December 9th 2009), I wrote about founding R-bloggers.com, an (unofficial) online R journal written by bloggers who agreed to contribute their R articles to the site. In this post I wish to celebrate R-bloggers’ first birthday by sharing with you: Links to the top 14 posts of 2010 Reflections about the origin of R-bloggers Statistics

Read more »