Blog Archives

Visualization of regression coefficients (in R)

July 2, 2010
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Visualization of regression coefficients (in R)

Update (07.07.10): The function in this post has a more mature version in the “arm” package. See at the end of this post for more details. * * * * Imagine you want to give a presentation or report of your latest findings running some sort of regression analysis. How would you do it? This was exactly the question...

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Contest: Road Traffic Prediction for Intelligent GPS Navigation

June 30, 2010
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Contest: Road Traffic Prediction for Intelligent GPS Navigation

About prize baring contests Competition with prizes are an amazing thing. If you are not sure of that, I urge you to listened to Peter Diamandis talk about his experience with the X prize (start listening at minute 11:40): At short – prizes can give up to 1 to 50 ratio of return on investment of the people giving...

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ggplot2 GUI progress

June 19, 2010
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ggplot2 GUI progress

(Written by Ian Fellows) Below is a link to the first of a weekly (or bi-weekly) screen-cast vlog of my progress building a GUI for the ggplot2 package. http://neolab.stat.ucla.edu/cranstats/gsoc_vlog1.mov comments and suggestions are more than welcome, and can e-mailed to me at: [email protected]

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Clustergram: visualization and diagnostics for cluster analysis (R code)

June 15, 2010
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Clustergram: visualization and diagnostics for cluster analysis (R code)

About Clustergrams In 2002, Matthias Schonlau published in “The Stata Journal” an article named “The Clustergram: A graph for visualizing hierarchical and . As explained in the abstract: In hierarchical cluster analysis dendrogram graphs are used to visualize how clusters are formed. I propose an alternative graph named “clustergram” to examine how cluster members are assigned to clusters as...

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June 20, online Registration deadline for useR! 2010

June 13, 2010
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useR!2010 is coming. I am going to give two talks there (I will write more of that soon), but in the meantime, please note that the online registration deadline is coming to an end. This was published on the R-help mailing list today: ————- The final registration deadline for the R User Conference is June 20, 2010, one week...

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Could we run a statistical analysis on iPhone/iPad using R?

June 8, 2010
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Could we run a statistical analysis on iPhone/iPad using R?

Imprtent update to the post (17.07.10) I now came across David smith’s post on the REvolution blog, pointing to instruction on the R wiki for how to install R on the iPhone! I didn’t try it myself since it both requires jailbreaking the iPhone, and I don’t have an iPhone. But it is still interesting to know of. Preface...

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Syncing files across computers using DropBox

May 29, 2010
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Syncing files across computers using DropBox

Motivation In the past few months I have been using DropBox for syncing my work files between my home and work computer. It has saved me from numerous mistakes and from sending the files to myself via e-mail. Recently I found this service highly useful for sharing files with 4 other people with whom I am working on a...

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Helping the blind use R – by exporting R console to Word

May 22, 2010
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Preface – R seems a natural fit for the blind statistician For blind people who wish to do statistics, R can be ideal. R command line interface offers straight forward statistical scripting in the form of question (what is the mean of x) followed by an answer (0.2). That is, instead of point-and-click dialog boxes with jumping windows of...

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useR-2010 is looking for a T-shirt design

May 19, 2010
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useR-2010 is looking for a T-shirt design

Katharine Mullen has just published on the R mailing list a call for designeRs who might be willing to design a T-shirt aRt design for the shirt that will be given in useR 2010. I consider such contests as one of those good-for-the-community things, and hope regular useRs, R bloggers, and companies that are based on R – will...

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Exporting R output to MS-Word with R2wd (an example session)

May 6, 2010
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Creating reports is one of the basic tasks in data analysis. R provides numerous functions and packages to export it’s (beautiful) output and help compile it into a report. In this post I will present one such (basic) solution for Windows OS users for exporting R output into Microsoft Word using the R2wd (package). There are more ways and...

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