August 2014

Introducing pipeR 0.4

August 3, 2014 | 0 Comments

pipeR 0.4 is released! Check it out at the project page. In this new version, two things happen. First, %____% handles everything. Second, the introduction of Pipe object. %____% In version 0.4, I decide to merge the functionality of all three operators in the previous versions. Only %____% operator remains, and the two other operators ... [Read more...]

Men set to live as long as women by 2010?

August 3, 2014 | 0 Comments

A few months ago, in Men set to live as long as women, figures show, it was mentioned that (in the U.K.) the gap between male and female life expectancy is closing and men could catch up by 2030, according to an adviser for the Office for National Statistics. (the ... [Read more...]

Introducing sanitizers 0.1.0

August 3, 2014 | 0 Comments

A new package sanitizers is now on CRAN. It provides test cases for Address Sanitizers, and Undefined Behaviour Sanitizers. These are two recent features of both g++ and clang++, and described in the Checking Memory Access section of the Writing R Ex... [Read more...]

enrichment map

August 3, 2014 | 0 Comments

In PLOB's QQ group, someone asked how to change the color of enrichment map in Cytoscape. I am very curious how enrichment map can helps to interpret enrichment results. It took me 2 hours to implement it using R and I am surprised that the enrichment map is better than anticipated. ... [Read more...]

Guns are Cool – Differences between states

August 3, 2014 | 0 Comments

Last week my blog showed that there are differences between states in the shootingtracker database. This week it is attempted to understand why states are different. A number of variables were extracted from a few sources, among which gun laws, % ... [Read more...]

qdap 2.1.1 Released

August 2, 2014 | 0 Comments

We’re very pleased to announce the release of qdap 2.1.1 This is the latest installment of the qdap package available at CRAN. Several important updates have occurred since we last blogged about the 1.3.1 release (demoing Version 1.3.1), most notable: … Continue reading →
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RcppAramdillo & OS X Mavericks configuration

August 2, 2014 | 0 Comments

I am in the process of speeding up some code, and I have been lured by the promises of Rcpp. Since the functions I am working on are mainly linear algebra, I wanted to try out RcppArmadillo. This put my … Continue reading → [Read more...]

The odds of a cluster of airplane accidents

August 2, 2014 | 0 Comments

Recently, there have been a lot of airplane accidents. July, 17th 2014, Hrabove, Ukraine, Malaysia Airlines, Boeing 777, fatalities 298 (/298) July, 23rd 2014, Magong, Taiwan, TransAsia Airways, ATR 72-500, fatalities 47 (/58) July, 24th 2014, Aguelhok, Mali, Air Algerie, Mc Donnell Douglas MD-83, fatalities 116 (/116) It is simple to find a lot of datasets about airplane crashes. For ... [Read more...]

Testing an R package’s interactive graphs

August 1, 2014 | 0 Comments

I’ve been working on an R package, R/qtlcharts, with D3-based interactive graphs for quantitative trait locus mapping experiments. Testing the interactive charts it produces is a bit of a pain. It seems like I pretty much have to just open a series of examples in a web ... [Read more...]

Code Snippet: Extracting a Subsample from a Large File

August 1, 2014 | 0 Comments

Last week a reader of the r-help mailing list posted a query titled “Importing random subsets of a data file.”  With a very large file, it is often much easier and faster–and really, just as good–to just work with a much smaller subset of the data. Fellow readers ... [Read more...]

Come see RStudio at JSM in Boston

August 1, 2014 | 0 Comments

The Joint Statistical Meetings (JSM) start this weekend! We wanted to let you know we’ll be there. Be sure to check out these sessions from RStudio and friends: Sunday, August 3 4:00 PM: A Web Application for Efficient Analysis of Peptide Libraries: Eric Hare*+ and Timo Sieber and Heike Hofmann 4:00 PM: ... [Read more...]

The R Markdown Cheat Sheet

August 1, 2014 | 0 Comments

R Markdown is a framework for writing versatile, reproducible reports from R. With R Markdown, you write a simple plain text report and then render it to create polished output. You can: Transform your file into a pdf, html, or Microsoft Word document—even a slideshow—at the click of ... [Read more...]

Webinar recording: Applications in R

August 1, 2014 | 0 Comments

Many thanks to everyone who attended Tuesday's webinar, Applications in R - Success and Lessons Learned from the Marketplace. We had a great turnout and a very lively Q&A session. I've already shared many of the slides describing how companies like Google, Facebook and the New York Times use ... [Read more...]

New d3.js visualization: Interpreting Correlations

August 1, 2014 | 0 Comments

Here is a new visualization done in d3js. In this visualization I show a scatter plot of two variables with a given correlation. The variables are samples from the standard normal distribution, which are then transformed to have a given correlation by... [Read more...]
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