August 2012

Love for ProjectTemplate

August 25, 2012 | hilaryparker

The advantage about writing a blog post about the tools you wish that you’d used throughout grad school is that, well, it makes you check them out. I went through the ProjectTemplate tutorial, and I’m hooked. Here’s the advantages as … Continue reading → [Read more...]

London 2012 Olympics — Medals vs GDP and population

August 25, 2012 | Tony

It’s already midnight. I’m sitting near my bed. And before going to bed, I’ll type my last post on London 2012 Olympics. Olympic games are not only individual competitions, but also the reflections of countries’ strength. This is one reason why Olympics data … Continue reading → [Read more...]

Toy Example with GScholarScraper_3.1

August 24, 2012 | Kay Cichini

A commentator on my blog brought up this nice idea of how to use the GScholarScraper function for bibliometrics..I altered the code a little bit which enables to set a year since when results should be returned and added a field to the output collectin... [Read more...]

Does playing baseball shorten your lifespan? (Answer: No.)

August 24, 2012 | David Smith

A National Institute for Occupational Safety and Health study, published in March, found that professional American football (NFL) players lived longer, on average, than similar "mere mortals" in the general population. Football is a dangerous sport, so that might seem surprising at first, until you consider the fact that NFL ... [Read more...]

Visualizing the Arctic Sea Ice Extent Decline

August 24, 2012 | Kelly

Understanding what is happening to Arctic sea ice is critical to recognizing the serious consequences of global warming. So I want to help people visualize the 30+ year trend in Arctic sea ice extent. The source data file is here: … Continue reading → [Read more...]

CRAN might get tenure at Yale?

August 24, 2012 | jackman

From one of the R lists I follow: Today (2012-08-23) on CRAN [1]: “Currently, the CRAN package repository features 4001 available packages.” These packages are maintained by approximately 2350 different folks. Previous milestones: 2011-05-12: 3,000 packages [1] 2009-10-04: 2,000 packages [2] 2007-04-12: 1,000 packages [3] 2004-10-01: 500 packages [4] 2003-04-01: 250 packages [4] [1] http://cran.r-project.org/... [Read more...]

ggplot2 Self-deprecation

August 24, 2012 | Christopher Gandrud

I've been in China working for a few weeks (where this blog is (oddly) blocked). So, I haven't been able to post much over the summer. To kick things off for the new (academic) year, I thought I might just re-post something good I saw on the Book of Sa... [Read more...]

Comparing hist() and cut() R functions

August 24, 2012 | Eldon

The other day a question about faceting data came up in the Dallas R Users group (link of conversation). The hist() function is more efficient and uses less memory than the cut() function. Additionally, hist() returns an object that makes... [Read more...]

Momentum with R: Part 1

August 23, 2012 | rbresearch

Time really flies… it is hard to believe that it has been over a month since my last post. Work and life in general have consumed much of my time lately and left little time for research and blog posts. Anyway, on to the post! This post will be the ... [Read more...]

difference between NA and NaN in R

August 23, 2012 | Xianjun Dong

We usually see NA and NaN in R. What's the difference between them?Here a good post for that topic:http://stats.stackexchange.com/questions/5686/what-is-the-difference-between-nan-and-naIn summary here:NaN ("Not a Number") means 0/0NA ("Not Available") is generally interpreted as a missing value and has various forms - NA_integer_, ... [Read more...]

Bonds Much Sharpe -r Than Buffett

August 23, 2012 | klr

Mebane Faber’s post Buffett’s Alpha points out Warren Buffett’s 0.76 Sharpe Ratio discussed in the similarly title paper Buffet’s Alpha.  I of course immediately think about the 8th Wonder of the World – the US Bond Market, whose Sharpe ...
[Read more...]
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