Hack-at-it 2009

June 9, 2009
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Hack-at-it 2009

The annual GGobi hack-at-it was held June 5-7 in Ames Iowa. The main directions of work areDevelopment of a new canvas for R supporting interactive and dynamic graphics. Michael is leading the effort on this. Higher level routines for supporting brushi...

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Hack-at-it 2009

June 9, 2009
By
Hack-at-it 2009

The annual GGobi hack-at-it was held June 5-7 in Ames Iowa. The main directions of work areDevelopment of a new canvas for R supporting interactive and dynamic graphics. Michael is leading the effort on this. Higher level routines for supporting brushi...

Read more »

Data Mashups in R from O’Reilly

June 9, 2009
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Data Mashups in R from O’Reilly

O’Reilly has published Data Mashups in R as a $4.99 PDF download in their Short Cut series. In 27 pages it takes you through an example of how to combine foreclosure information with maps and geographical information...

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Data Mashups in R from O’Reilly

June 9, 2009
By
Data Mashups in R from O’Reilly

O’Reilly has published Data Mashups in R as a $4.99 PDF download in their Short Cut series. In 27 pages it takes you through an example of how to combine foreclosure information with maps and geographical information...

Read more »

Two plot with a common legend – base graphics

June 6, 2009
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Two plot with a common legend – base graphics

If you need to share a common legend between two graphs using the ggplot2 package/paradigm take a look at this post from the Learning R blog.The code below solves the same task using the R base graphics.png( "2plot1legend.png", width = 480, height = 68...

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Learning R for Researchers in Psychology

June 6, 2009
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Learning R for Researchers in Psychology

R is a powerful environment for statistical computing. Here is a selective list of resources on R with an emphasis on resources useful for researchers in psychology.Psychology specific R resourcesR Notes for Experimental PsychologyWilliam Revelle's Psy...

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Introductory statistics with R

June 5, 2009
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I know that a lot of you are scrambling to spend your training grant money by next week. If you think you'll ever need to use R, I strongly recommend buying this book: Introductory Statistics with R, by Peter Dalgaard ($48, Amazon). I picked this up a while back and read through most of it in a...

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Elementary Statistics with R

June 5, 2009
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Elementary Statistics with R

Ever wonder how to finish your statistics homework real fast? Or you just want a quick way to verify your tedious calculations in your statistics class assignment. We provide an answer here by solving statistics exercises with R. read more

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Getting started with R (for german speakers)

June 5, 2009
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Getting started with R (for german speakers)

Just a little note for german speaking R beginners: There is an introductory course in R (german) available online on the website of the department of methodology and evaluation research at the University of Jena. Dr. Ivailo Partchev holds a seven sess...

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Twitter from R… Sure, why not!

June 4, 2009
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Twitter from R… Sure, why not!

So I have started following the #RStats tag in twitter. Prior to a week ago I had never Twitterbated so I thought I would give it a go since I am not one to shy away from new technology… much. I think of Twitter like a call in radio show where I get to cut

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Use meaningful color schemes in your figures

June 3, 2009
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Some of the best figure design ideas come from cartographers. If you've ever read a Tufte book you've seen lots of examples. Let's talk about using color effectively. Penn State geography professor Cindy Brewer's ColorBrewer tool for selecting color schemes for figures has been conveniently packaged into an R library called RColorBrewer. You'll have to read up...

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How to plot a graph in R

June 2, 2009
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How to plot a graph in R

Here's a quick tutorial on how to get a nice looking graph out of R (aka the R Project for Statistical Computing). Don't forget that help for any R command can be displayed by typing the question mark followed by the command. For example, to see help o...

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Run a remote R session in emacs: emacs + ESS + R + ssh

June 1, 2009
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I don’t know how, but somehow, i stumbled on how to do this. I’ve always used emacs with ESS to run R, since spring 2006 (did it on windows, switched to linux, for years, and most recently, on my macbook). I liked this because i get the same usual interface across ALL platforms (well, maybe

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How to win the KDD Cup Challenge with R and gbm

June 1, 2009
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How to win the KDD Cup Challenge with R and gbm

Hugh Miller, the team leader of the winner of the KDD Cup 2009 Slow Challenge (which we wrote about recently) kindly provides more information about how to win this public challenge using the R statistical computing and analysis platform on a laptop (!).

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How to win the KDD Cup Challenge with R and gbm

June 1, 2009
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How to win the KDD Cup Challenge with R and gbm

Hugh Miller, the team leader of the winner of the KDD Cup 2009 Slow Challenge (which we wrote about recently) kindly provides more information about how to win this public challenge using the R statistical computing and analysis platform on a laptop (!).

Read more »

Ubuntu Developer Summit in Barcelona

May 31, 2009
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Due to some things falling into place, I had an opportunity to attend the first two days of last week's Ubuntu Developer Summit in beautiful Barcelona. Somehow, I had never managed to attend a Debian conference either, so it was good to meet a few of t...

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Ubuntu Developer Summit in Barcelona

Due to some things falling into place, I had an opportunity to attend the first two days of last week's Ubuntu Developer Summit in beautiful Barcelona. Somehow, I had never managed to attend a Debian conference either, so it was good to meet a few of the old Debian hands now moving Ubuntu along, as well as a few of the Ubuntu...

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Nice Interview

May 31, 2009
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Nice Interview

Here you can read a nice interview with David Smith, REvolution Computing’s Director of Community, statistician and bloggeR.

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R used by KDD 2009 cup winner of slow challenge

May 31, 2009
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R used by KDD 2009 cup winner of slow challenge

The results from the KDD Cup 2009 challenge (which we wrote about before) are in, and the winner of the slow challenge used the R statistical computing and analysis platform for their winning submission.

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R used by KDD 2009 cup winner of slow challenge

May 31, 2009
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R used by KDD 2009 cup winner of slow challenge

The results from the KDD Cup 2009 challenge (which we wrote about before) are in, and the winner of the slow challenge used the R statistical computing and analysis platform for their winning submission.

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Emacs: AucTeX + Rubber + Sweave

May 30, 2009
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I got rubber to work with auctex and sweave (Rnw) files with the help of this. Basically, combined with my other stuff, I tweaked my .emacs file to look like: ;;following is AucTeX with Sweave -- works ;;http://andreas.kiermeier.googlepages.com/essmaterials (setq TeX-file-extensions '("Snw" "Rnw" "nw" "tex" "sty" "cls" "ltx" "texi" "texinfo")) (add-to-list 'auto-mode-alist '("\\.Rnw\\'" . Rnw-mode)) (add-to-list

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JPM Chase Corporate Challenge 2009

The 28th annual JP Morgan Chase Corporate Challenge race took place a couple of days ago May 21. Participation was down from the record of 23,000 runners set last year at around 17,125. With splendid weather, it is always a nice way to start the Memorial day weekend. We fielded a small but spirited team of nine runners. I finished with...

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The R Journal, Issue 1 Volume 1

May 29, 2009
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The R journal just published its inaugural peer-reviewed journal. Aligned with the open-source mantra, the journal is free and openly accessible. The journal features short articles on topics focused on R, including notes about new add-on packages, hints for R newcomers, application reports detailing examples of data analysis with R, and other news items. The current...

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R tips: Use read.table instead of strsplit to split a text column into multiple columns

May 29, 2009
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R tips: Use read.table instead of strsplit to split a text column into multiple columns

Someone on the R-help mailing list had a data frame with a column containing IP addresses in quad-dot format (e.g. 1.10.100.200). He wanted to sort by this column and I proposed a solution involving strsplit. But Peter Dalgaard comes up with a much nicer method using read.table on a textConnection object:

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R tips: Use read.table instead of strsplit to split a text column into multiple columns

May 29, 2009
By
R tips: Use read.table instead of strsplit to split a text column into multiple columns

Someone on the R-help mailing list had a data frame with a column containing IP addresses in quad-dot format (e.g. 1.10.100.200). He wanted to sort by this column and I proposed a solution involving strsplit. But Peter Dalgaard comes up with a much nicer method using read.table on a textConnection object:

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R Journal 1/1

May 29, 2009
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R Journal 1/1

R Journal 1/1 is out! Download it from here.

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Accessing Soil Survey Data via Web-Services

May 28, 2009
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Accessing Soil Survey Data via Web-Services

Soil Survey Data   Online Querying of NRCS Soil Survey Data Sometimes you are only interested in soils data for a single map unit, component, or horizon. In these cases downloading the entire survey from Soil Data Mart is not worth the effort. An...

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Making Sense of Large Piles of Soils Information: Soil Taxonomy

May 27, 2009
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Making Sense of Large Piles of Soils Information: Soil Taxonomy

Western Fresno Soil Hierarchy: partial view of the hierarchy within the US Soil Taxonomic system   Soil...

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Embeding fonts in figures produced by R

May 27, 2009
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Some publishers insist that we embed (include) the fonts in each figure. Here is a set of links regarding this issue for figures produced by R:http://tolstoy.newcastle.edu.au/R/help/05/01/10779.htmlhttps://stat.ethz.ch/pipermail/r-help/2006-October/114...

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