Are We Japanese?

January 13, 2012 | klr

Most of the discussion trying to determine if the U.S. is Japan 20 years later focuses on the economy and the stock market.  However, one of the biggest and most persistent correlations between Japan and the U.S. are the Japanese Yen and the U.S. ...
[Read more...]

Revolution Newsletter: January 2012

January 13, 2012 | David Smith

The most recent edition of the Revolution Newsletter is out. The news section is below, and you can read the full January edition (with highlights from this blog and community events) online. You can subscribe to the Revolution Newsletter to get it monthly via email. Reflections on 2011. Last year was ... [Read more...]

Time Series Matching

January 13, 2012 | systematicinvestor

THIS IS NOT INVESTMENT ADVICE. The information is provided for informational purposes only. If it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck. Do you want to know what S&P 500 will do in the next week, month, quarter? ... [Read more...]

Retrieving RSS Feeds Using Google Reader

January 13, 2012 | Jason

I have been working on a new package makeR to help manage Sweave projects where you wish to create multiple versions of documents that are based on a single source. For example, I create lots of monthly and quarterly reports using Sweave and the only differences between versions are a ... [Read more...]

Functional ANOVA using INLA

January 13, 2012 | simonbarthelme

[Update alert: INLA author Håvard Rue found a problem with the code below. See here] Ramsay and Silverman’s Functional Data Analysis is a tremendously useful book that deserves to be more widely known. It’s full of ideas of neat things one can do when part of a ... [Read more...]

Stocks When Bonds are Extreme

January 12, 2012 | klr

In Extreme Bond Returns, I did not consider the context of extreme bond returns, so let’s examine annual returns for the Dow Jones Industrial Average when bonds experience extreme annual returns.  I was very surprised that stocks performed extre...
[Read more...]

Scraping table from html web with CloudStat

January 12, 2012 | CloudStat

You need to use the data from internet, but don’t type, you can just extract or scrape them if you know the web URL. Thanks to XML package from R. It provides amazing readHTMLtable() function. For a study case, I want to scrape data: US Airline Custo... [Read more...]

‘S Poetry’ and ‘The R Inferno’: Hardcopies on Sale

January 12, 2012 | David Smith

Patrick Burns' informative and entertaining books for R programmers, 'S Poetry' and 'The R Inferno', which have long been available as free downloads, are now available in an attractive hardcover format from Lulu Press and are on 25% sale through the end of January (use discount code LULUBOOKUK305). 'S Poetry', although ... [Read more...]

Quick Update on the Components of Bond Returns

January 12, 2012 | klr

In Real Squeeze, -1% Guaranteed Real Real Return! Yummy??, and Historical Sources of Bond Returns, I offer some historical perspective on the only sources of bond returns: inflation, real returns, and credit.  Assuming no credit risk in US Treasur...
[Read more...]

New version of analogue (0.8-0)

January 12, 2012 | ucfagls

Yesterday I pushed an update of my analogue package to CRAN. The new version is 0.8-0 and contains some new functions, several bug fixes and a major change arising from additions to R 2.14.x requiring all packages to have a … Continue reading → [Read more...]

Revolution Analytics: 2011 in Review, by Norman Nie

January 11, 2012 | David Smith

In this open letter to our customers, Revolution Analytics CEO Norman Nie reflects on the accomplishments of the past year. Dear Revolution Analytics Client, I wanted to take this opportunity to wish you all a happy and healthy 2012 and thank you for your support in 2011. Through the efforts of the ... [Read more...]

Survey Time

January 11, 2012 | klr

After I completed the vignette survey http://lamages.blogspot.com/2012/01/feedback-from-vignette-survey.html, I was amazed with the process, functionality, and potential R integration from Google Docs forms.  I just had to make one of my own. As I...
[Read more...]

Making an R Package: Not as hard as you think

January 11, 2012 | markbulling

I’ve been writing functions in R for a while to do various things like talking to APIs, web scraping, model testing and data visualisation (basically thing which can get a bit repetitive!), but have always been slightly intimidated about turning those functions into a package, which I could then ... [Read more...]

Another Year, Another rApache Release

January 11, 2012 | Jeffrey Horner

I’m feeling chancy, just like those two angels who took a chance on me so many years ago… So I decided to release rApache 1.1.15. You can grab the source from rapache.net. Notable change includes support for deploying Rook applications, which you [Read more...]

R is a language

January 11, 2012 | Luis

A commenter on this blog reminded me of one of the frustrating aspects faced by newbies, not only to R but to any other programming environment (I am thinking of typical students doing stats for the first time). The statement … Continue reading → [Read more...]

Words in Politics: Some extensions of the word cloud

January 10, 2012 | Ian

The word cloud is a commonly used plot to visualize a speech or set of documents in a succinct way. I really like them. They can be extremely visually pleasing, and you can spend a lot of time perusing over the words gaining new insights. That said, they don't convey ... [Read more...]
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