R-statistics blog

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• Recent Posts

  • Printing nested tables in R – bridging between the {reshape} and {tables} packages
  • Interactive Graphics with the iplots Package (from “R in Action”)
  • Merging two data.frame objects while preserving the rows’ order
  • Aggregation and Restructuring data (from “R in Action”)
  • Top 20 R posts of 2011 (and some R-bloggers statistics)
  • data.frame objects in R (via “R in Action”)
  • UseR! 2011 slides and videos – on one page
  • edimax EW-7811Un USB wireless – connecting to a network (on ubuntu 11.10)
  • Diagram for a Bernoulli process (using R)
  • The present and future of the R blogosphere (~7 minute video from useR2011)

• Archives

  Select Month January 2012 December 2011 November 2011 October 2011 August 2011 June 2011 April 2011 March 2011 February 2011 January 2011 December 2010 October 2010 September 2010 August 2010 July 2010 June 2010 May 2010 April 2010 March 2010 February 2010 December 2009 October 2009 September 2009 July 2009 March 2009

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• R-bloggers

  • RStudio Server part 3: using an ssh tunnel for high performance
    In part 2 of this series of posts on RStudio Server, I commented that I suspected that RStudio Server would be fast. The first time I tried this from a remote connection, I was disappointed with the performance. Many companies… See more › […]
  • R functions as self-documenting API’s.
    R functions as APIs In our first post we demonstrated how to publish an R function to OpenCPU, so that it comes an API that can be called remotely. In a subsequent post we showed the advantages of putting the function in a package: it gets a permanent URI and one can include ‘apps’ in ... […]
  • A spell-checker in R
    I came across Dr. Peter Norvig’s blog about writing a basic spell-checker (http://norvig.com/spell-correct.html), and just had to try to implement it in R. Please excuse the ugly-ish code (I have not optimized it or commented it adequately at this point, but you can get the idea of what it does by reading Dr. Norvig’s blog). […]
  • updated slides for ABC PhD course
    Over the weekend, I have added a few slides referring to recent papers mentioning the convergence of ABC algorithms, in particular the very relevant paper by Dean et al. I had already discussed in an earlier post. (This is taking a larger chunk of my time than expected! I am glad I will use the […]
  • Example 9.20: visualizing Simpson’s paradox
    Simpson's paradox is always amazing to explain to students. What's bad for one group, and bad for another group is good for everyone, if you just collapse over the grouping variable. Unlike many mathematical paradoxes, this arises in a number of real... […]
  • Gauging Interest in a Montreal R User Group
    Some of us over at McGill’s Biology Graduate Student Association have been developing and delivering R/Statistics workshops over the last few years. Through invited graduate students and faculty, we have tackled  everything from multi-part introductory workshops to get your feet wet, to special topics such as GLMs, GAMs, Multi-model inference, Phylogenetic a […]
  • What are the most popular bike routes in London?
    James Cheshire, R user and lecturer at the UCL Centre for Advanced Spatial Analysis, created this map of the most trafficked cycle routes in London: Click to enlarge, it's a gorgeous chart. The bicycle traffic data comes from London's public cycle-hire facility, which currently is only available in central London (which is why you don't see mu […]
  • Early-February flotsam
    Mike Croucher at Walking Randomly points out an interesting difference in operator precedence for several mathematical packages to evaluate a simple operation 2^3^4. It is pretty much a divide between Matlab and Excel (does the later qualify as mathematical software?) … Continue reading → […]
  • Workshop on Mixed and Multilevel Modelling with R in Toronto
    Summer Program In Data Analysis (SPIDA): May 24th – June 1st, 2012 In its thirteenth season this year, ISR’s Summer Program in Data Analysis focuses on linear models, beginning with “standard” regression through generalized linear models, and extending to mixed or multilevel models, linear and non-linear and generalized, which incorporate two or more hierarc […]
  • More Beautiful Growth of $1 Chart
    With all my recent focus on reporting and visualization, you might think that I have the investments all figured out.  Unfortunately, that is not the case, and I will resume more standard investment and systems posts soon.  I did want to shar... […]