May 2013

Parallel Processing: When does it worth?

May 29, 2013 | Daniel

Most computers nowadays have few cores that incredibly help us with our daily computing duties. However, when statistical softwares do use parallelization for analyzing data faster? R, my preferred analytical package, does not take too much advantage of multicore processing by default. In fact, R has been inherently a “single-processor” ... [Read more...]

Two forthcoming R books

May 29, 2013 | David Smith

Today I learned about two forthcoming R books that I'm now looking forward to. The first is Applied Predictive Modeling by Max Kuhn and Kjell Johnson. Max Kuhn is the author of the caret package, an extremely useful and powerful R package for fitting and optimizing all kinds of predictive ... [Read more...]

Shiny talk by Joe Cheng

May 29, 2013 | Christopher Bare

Shiny is a framework work for creating web applications with R. Joe Cheng of RStudio, Inc. presented on Shiny last evening in Zillow's offices 30 stories up in the former WaMu Center. Luckily, the talk was interesting enough to compete with the view ... [Read more...]

Look Familiar? Mapping in R

May 29, 2013 | 0utlieR

For those who have been following the R-Bloggers this picture should be yesterdays news, but there was an article on the BBC on it, full story HERE. I find it interesting how it was on Drudge Report (www.drudgereport.com) which gets over 1 million hits... [Read more...]

Futile.logger 1.3.3 RC available

May 29, 2013 | Brian Lee Yung Rowe

This is a preview release of futile.logger 1.3.3 so some people with feature requests can try out the code before …Continue reading » [Read more...]

Convert IP addresses to geolocation, latitude and longitude etc etc

May 29, 2013 | Robert

Whoa! Now this is cool. It turns out there is a database at freegeoip.net which you can query for the location of a particular IP address. And as it has a neat little API for batches of IPs, you can … Continue reading → [Read more...]

Data sonification with R: the sound of Twitter data

May 29, 2013 | Jeff Hemsley

What does a tweet sound like? Not the kind that flies around in the air, but the kind that zips to and from our mobile devices. I’m intensely interested in finding ways to make sense of data. Sonification of data – representing data with sound – offers one way to do ... [Read more...]

SAS Dominates Analytics Job Market; R up 42%

May 29, 2013 | Bob Muenchen

I’m continuing to gather and analyze data to update The Popularity of Data Analysis Software. In this installment I cover the latest employment figures. Employment is important to us all, so what software skills are employers seeking? A thorough answer … Continue reading → [Read more...]

Analysis of Cable Morning Trade Strategy

May 29, 2013 | andrew

A couple of years ago I implemented an automated trading algorithm for a strategy called the “Cable Morning Trade”. The basis of the strategy is the range of GBPUSD during the interval 05:00 to 09:00 London time. Two buy stop orders are placed 5 points above the highest high for this period; two ... [Read more...]

Stepping up to Big Data with R and Python: A Mind Map of All the Packages You Will Ever Need

May 29, 2013 | Abhijit Dasgupta

On May 8, we kicked off the transformation of R Users DC to Statistical Programming DC (SPDC) with a meetup at iStrategyLabs in Dupont Circle. The meetup, titled “Stepping up to big data with R and Python,” was an … Continue reading →The post Stepping up to Big Data with R and ... [Read more...]

Item Analysis App – Shiny Code

May 28, 2013 | Francis Smart

Here is the code for my first Shiny App! It is the one that I posted previously with a few slight revisions. You can see it at:A Shiny R AppIn order to make any sense of this I suggest you working through the tutorial (http://www.rstudio.com/shiny/) ... [Read more...]

Will Mu Go Out With Median

May 28, 2013 | Wesley

True story (no really, this did actually happen). While in grad school one of the other teaching assistants was approached by one of the students and was asked “will mu go out with median?” The teaching assistant thought the play on words was pretty funny, laughed, and then cluelessly walked ... [Read more...]

Companies using Open Source R in 2013

May 28, 2013 | David Smith

A recent quora post asked an interesting question: What interesting companies, open source projects are using R in 2013? Since we've been tracking applications of R here on the blog for a while now, I listed just some of the most recent examples: The New York Times routinely uses R for ... [Read more...]

Why doesn’t R have a MaxDiff package?

May 28, 2013 | Joel Cadwell

Almost once every year someone asks if R has a package for running the MaxDiff procedure sold by Sawtooth. One such inquiry recently received a reply with a link showing in some detail the R code needed to generate a balanced incomplete... [Read more...]

Intended or Unintended Consequences

May 28, 2013 | klr

<img src=' [Read more...]

Using R to communicate via a socket connection

May 28, 2013 | Cory Nissen

Occasionally, the need arises to communicate with R via another process. There are packages available to facilitate this communication, but for simple problems, a socket connection may be the answer. Nearly all software languages have a socket communic... [Read more...]

Converting Existing R Scripts to ORE – Getting Started

May 28, 2013 | mhornick

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Oracle R Enterprise provides a comprehensive, database-centric environment for end-to-end analytical processes in R, with immediate deployment to production environments. This message really resonates with our customers who are interested in executing R functions on database-resident data while seamlessly leveraging Oracle Database ...

[Read more...]

R/Finance 2013 Review

May 28, 2013 | Joshua Ulrich

It's been one week since the 5th Annual R/Finance conference, and I finally feel sufficiently recovered enough to share my thoughts. The conference is a two-day whirlwind of applied quantitative finance, fantastic networking, and general geekery.The comments below are based on my personal experience. If I don't comment ... [Read more...]

Value at Risk with exponential smoothing

May 28, 2013 | Pat

More accurate than historical, simpler than garch. Previously We’ve discussed exponential smoothing in “Exponential decay models”. The same portfolios were submitted to the same sort of analysis in “A look at historical Value at Risk”. Issue Markets experience volatility clustering. As the previous post makes clear, historical VaR suffers ... [Read more...]

Interactive presentation with slidify and googleVis

May 28, 2013 | Markus Gesmann

Last week I was invited to give an introduction to googleVis at Lancaster University. This time I decided to use the R package slidify for my talk. Slidify, like knitr, is built on Markdown and makes it very easy to create beautiful HTML5 presentations... [Read more...]

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R-bloggers

R news and tutorials contributed by hundreds of R bloggers

May 2013

Parallel Processing: When does it worth?

Two forthcoming R books

Shiny talk by Joe Cheng

Look Familiar? Mapping in R

Futile.logger 1.3.3 RC available

Convert IP addresses to geolocation, latitude and longitude etc etc

Data sonification with R: the sound of Twitter data

SAS Dominates Analytics Job Market; R up 42%

Analysis of Cable Morning Trade Strategy

Stepping up to Big Data with R and Python: A Mind Map of All the Packages You Will Ever Need

Item Analysis App – Shiny Code

Will Mu Go Out With Median

Companies using Open Source R in 2013

Why doesn’t R have a MaxDiff package?

Intended or Unintended Consequences

Using R to communicate via a socket connection

Converting Existing R Scripts to ORE – Getting Started

R/Finance 2013 Review

Value at Risk with exponential smoothing

Interactive presentation with slidify and googleVis

May 2013

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