Monthly Archives: August 2014

Pathway analysis in R and BioConductor.

August 28, 2014
By
Pathway analysis in R and BioConductor.

There are many options to do pathway analysis with R and BioConductor. First, it is useful to get the KEGG pathways: Of course, “hsa” stands for Homo sapiens, “mmu” would stand for Mus musuculus etc. Incidentally, we can immediately make an analysis using gage. However, gage is tricky; note that by default, it makes a

Read more »

Getting emotional in the absence of something: Using the Berlin Affective Word List to analyze emotional valence and arousal for nouns and adjectives.

August 28, 2014
By
Getting emotional in the absence of something: Using the Berlin Affective Word List to analyze emotional valence and arousal for nouns and adjectives.

This is something I did a while ago using the Berlin Affective Word List (BAWL).The BAWL contains ratings for 2902 German words (2107 nouns, 504 verbs, 291 adjectives). Ratings were collected for emotional valence (bad vs. good), arousal (the grade of valence) and imaginability (how well you can imagine the specific word). Please note, that I cannot supply the...

Read more »

The Andrica’s Conjecture

August 27, 2014
By
The Andrica’s Conjecture

Things should be as simple as possible, but not simpler (Albert Einstein) Following with conjectures about primes, it is time for Andrica’s conjecture. The great mathematician Leonhard Euler (1707-1783) pointed: “Mathematicians have tried with no success to find some kind of order in the sequence of prime numbers and today we have reasons to believe that

Read more »

New Wine in an Old Bottle: R Markdown v2 and R Studio on the Cent OS Server

August 27, 2014
By

Introduction New Pandoc Installing LaTeX Packages Introduction R Markdown Version 2 is a boon to students: with a single click one can convert an R Markdown file to either HTML, PDF or Word format. However, getting this feature to work fully in the R Studio server environment may require a bit of work, especially if you running...

Read more »

DataScienceLA interviews David Smith

August 27, 2014
By

While I was in LA for the useR! 2014 conference last month, I had the great pleasure of being among the participants in the DataScienceLA interview series hosted by Eduardo Ariño de la Rubia. Eduardo is both an R user and an excellent interviewer: his preparation and knowledge of R has resuled in a fascinating interview series for any...

Read more »

statebins – U.S. State Cartogram Heatmaps in R

August 27, 2014
By
statebins – U.S. State Cartogram Heatmaps in R

UPDATE The statebins package is now available on CRAN I became enamored (OK, obsessed) with a recent visualization by the WaPo team which @ryanpitts tweeted and dubbed statebins: Statebins! RT @kevinschaul: States with the most jobs lost or threatened because of trade. http://t.co/r1pJhudpz3 pic.twitter.com/eMozAgyEAb— Ryan Pitts (@ryanpitts) August 24, 2014 In a very real sense they are heatmap-like cartograms (read more about cartograms...

Read more »

Chapter 10 | Rcpp: Seamless R and C++ Integration

.main-container { max-width: 940px; margin-left: auto; margin-right: auto; } Introduction Sometimes R code just isn’t fast enough and there’s no simply way to make the code any faster. The Rcpp package provides a consistent API for s...

Read more »

R Workshops Updated to Include the Latest Packages

August 27, 2014
By
R Workshops Updated to Include the Latest Packages

Two new R packages are quickly becoming standards in the R community: Hadley Wickham’s dplyr and tidyr. The dplyr package almost completely replaces his popular plyr package for data manipulation. Most importantly for general R use, it makes it much easier … Continue reading →

Read more »

Adding CITATION to your R package

August 27, 2014
By
Adding CITATION to your R package

Original post from Robin's Blog:Software is very important in science – but good software takes time and effort that could be used to do other work instead. I believe that it is important to do this work – but to make it worthwhile, people need to get credit for their work, and in academia that means citations. However, it is often very difficult...

Read more »

Reading the Gauss-Markov theorem

August 26, 2014
By
Reading the Gauss-Markov theorem

What is the Gauss-Markov theorem? From “The Cambridge Dictionary of Statistics” B. S. Everitt, 2nd Edition: A theorem that proves that if the error terms in a multiple regression have the same variance and are uncorrelated, then the estimators of the parameters in the model produced by least squares estimation are better (in the sense Related posts: What is meant...

Read more »

Search R-bloggers

Sponsors

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)