May 2012

Yes, you need more than just R for Big Data Analytics

May 2, 2012 | David Smith

Douglas Merrill, former CIO/VP of Engineering at Google, writes in Forbes about using the R language for data analysis: Most folks with math-oriented graduate degrees will have written something in R, a non-commercial option for your big data analysis. So, great graduates from great graduate schools know great tools. ... [Read more...]

EU rules that computer languages cannot be copyrighted

May 2, 2012 | Derek-Jones

The European Court of Justice has published its decision in SAS v WPL; the title of the press release says it all “The functionality of a computer program and the programming language cannot be protected by copyright”. To summarise the background, World Programming Ltd developed a system that was capable ... [Read more...]

Finding Earth II

May 2, 2012 | Patrick Rhodes

By 2030, we will have found approximately 10,000 exoplanets. "If it is just us... seems like an awful waste of space." -- from the movie Contact (1997) based on the book Contact by Carl Sagan. By the year 2030, it's possible that over ten th... [Read more...]

Measuring time series characteristics

May 2, 2012 | Rob J Hyndman

A few years ago, I was working on a project where we measured various characteristics of a time series and used the information to determine what forecasting method to apply or how to cluster the time series into meaningful groups. The two main papers to come out of that project ... [Read more...]

Next Kölner R User Meeting: 6 July 2012

May 1, 2012 | Markus Gesmann

The next Cologne R user group meeting is scheduled for 6 July 2012. All details are available on the new KölnRUG Meetup site. Please sign up if you would like to come along, and notice that there is also pub poll for the after "work" drinks. Notes fr...
[Read more...]

A gallery view for Craigslist

May 1, 2012 | flodel

As much as I love Craigslist, I sometimes find the interface a bit limited. My biggest wish? That there was an option for showing the search results as an image gallery, like eBay has. This could prove quite useful for browsing things like antiques,...
[Read more...]

Mining for relations between nominal variables

May 1, 2012 | inkhorn82

The task today was to find what variables had significant relations with an important grouping variable in the big dataset I’ve been working with lately.  The grouping variable has 3 levels, and represents different behaviours of interest.  At first I … Continue reading → [Read more...]

Google BigQuery and the Github Data Challenge

May 1, 2012 | David Smith

Github has made data on its code repositories, developer updates, forks etc. from the public GitHub timeline available for analysis, and is offering prizes for the most interesting visualization of the data. Sounds like a great challenge for R programmers! The R language is currently the 26th most popular on ... [Read more...]

New R User Group in Cologne, Germany

May 1, 2012 | David Smith

The latest local R user group to join the fold is the Köln R User Group, now the sixth R user group in Germany. Their first group meeting will be on July 6, with presentations on ANOVA, ggplot2 graphics in Deducer, and writing R code with Emacs's Org-mode. If you're ... [Read more...]

NSF BIGDATA webinar

May 1, 2012 | Stephen Turner

If you're doing any kind of big data analysis - genomics, transcriptomics, proteomics, bioinformatics - then unless you've been on vacation the last few weeks you've no doubt heard about the NSF/NIH BIGDATA  Initiative (here's the NSF solicitation... [Read more...]

Quick Tip: Replace Values in Dataframe on Condition with Random Numbers

May 1, 2012 | Kay Cichini

This one took me some time - though, in fact it is plain simple:__ options(scipen=999)__ (my_df X1 X2 X3 X4 X5 X6 X7 X8 X9 X101 0 0 1 0 1 1 1 1 0 12 0 0 1 1 1 0 0 0 0 03 0 1 1 0 0 1 1 0 0 14 1 1 0 0 0 0 0 0 0 05 0 0 1 1 1 0 0 1 1 16 0 0 1 1 0 0 1 1 0 17 0 0 1 1 1 0 1 1 1 18 1 1 1 0 0 0 0 1 1 09 0 0 0 0 1 0 1 0 1 010 1 1 1 1 1 0 1 1 0 1__ my_df[my_df == 0] __ my_df X1 X2 X3 X4 X5 X6 X7 X81 0.000268 0.000926 1.000000 2.00e-05 1.000000 1.00e+00 1.00e+00 1.00e+002 0.000531 0.000882 1.000000 1.00e+00 1.000000 4.66e-04 3.96e-04 6.70e-043 0.000785 1.000000 1.000000 5.03... [Read more...]

What does this package look like?

May 1, 2012 | tuxettechix

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, ... [Read more...]
1 12 13 14 15

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)