2905 search results for "twitter"

How to Become an Efficient and Collaborative R Programmer

December 12, 2011
By

I may want to add a subtitle "Why R-Forge Must Die" (thinking of Barry Rowlingson's talk earlier this year). I have been a GitHub user for two years, and I was mainly influenced by Hadley. Now I even feel a little bit addicted to GitHub (its slogan is ...

Read more »

UseR! 2011 slides and videos – on one page

December 11, 2011
By

Links to slides and talks from useR 2011 - all organized in one page.Read more »

Read more »

Rescuing Twapperkeeper Archives Before They Vanish, Redux

December 11, 2011
By
Rescuing Twapperkeeper Archives Before They Vanish, Redux

In Rescuing Twapperkeeper Archives Before They Vanish, I described a routine for grabbing Twapperkeeper archives, parsing them, and saving them to a local desktop file using the R programming language (downloading RStudio is the easiest way I know of getting R…). Following a post fron @briankelly (Responding to the Forthcoming Demise of TwapperKeeper), where Brian

Read more »

Rescuing Twapperkeeper Archives Before They Vanish

December 10, 2011
By
Rescuing Twapperkeeper Archives Before They Vanish

A couple of years or so ago, various JISC folk picked up on the idea that there might be value in them thar tweets and started encouraging the use of Twapperkeeper for archiving hashtagged tweets around events, supporting the development of that service in exchange for an open source version of the code. Since then,

Read more »

Using R to create a logo: Simple

December 9, 2011
By
Using R to create a logo: Simple

R user Josh Reich, who we've featured here on the blog before, is also the CEO and co-founder of the new user-friendly bank, Simple. (Confidential to Josh -- still waiting on my invite...). So it's no suprise that Simple's logo is rendered using the R language: wave <- function (a, R, p, w) { x <- (0.5 + 0.5*R*sin(p+w*a))*cos(a)...

Read more »

In case you missed it: November roundup

December 9, 2011
By

In case you missed them, here are some articles from November of particular interest to R users. R 2.14 now includes SVG support for Windows. The submissions for the Applications of R in Business contest are available for viewing online. A tutorial on using the Rdatamarket package to import public datasets into R. Free books on R for multivariate...

Read more »

Running your R and LaTeX Infrastructure from a portable USB Drive

December 9, 2011
By
Running your R and LaTeX Infrastructure from a portable USB Drive

On my road to eventually running all of my programs off an USB device I’ve gotten a little bit closer yesterday thanks to input from Duncan Murdoch and Yihui Xie. Eventually running the entire Windows OS off a USB drive would be nice (not talking about running it as a Virtual Machine, but to have … Continue reading...

Read more »

Simple and Profitable

December 8, 2011
By
Simple and Profitable

The end of the month effect was examined by MarketSci in the The Last Day of the Month Blahs post. The idea is simple: buy on the last day of the month and sell a few days later. This idea was put into a strategy by Quanting Dutchman in the Strategy 2 – Monthly End-of-the-Month

Read more »

Le Monde puzzle [#752]

December 8, 2011
By
Le Monde puzzle [#752]

After a loooong break, here is one Le Monde mathematical puzzle I had time to look at, prior to going to Dauphine for a Saturday morning class (in replacement of my R class this week)! The question is as follows: A set of numbers {1,…,N} is such that multiples of 4 are tagged C and

Read more »

Code Optimization: One R Problem, Thirteen Solutions – Now Sixteen!

December 8, 2011
By
Code Optimization: One R Problem, Thirteen Solutions – Now Sixteen!

Introduction The old r-wiki optimisation challenge describes a string generation problem which I have bloged about previously both here and here. The Objective To code the most efficient algorithm, using R, to produce a sequence of strings based on a single integer input, e.g.: Solutions One Through Thirteen A variety of different approaches are illustrated on the

Read more »

Sponsors

Mango solutions



RStudio homepage



Zero Inflated Models and Generalized Linear Mixed Models with R

Dommino data lab

Quantide: statistical consulting and training



http://www.eoda.de







ODSC

ODSC

CRC R books series





Six Sigma Online Training





Contact us if you wish to help support R-bloggers, and place your banner here.

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)