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Welcome to Simply Statistics 2.0

November 18, 2012 | rdpeng

Welcome to the re-designed, re-hosted and re-platformed Simply Statistics blog. We have moved the blog over to the WordPress platform to give us some newer features that were lacking over at tumblr. So far the transition has gone okay but … Continue reading → [Read more...]

Logo Contest Winner

November 16, 2012 | simplystatistics

Congratulations to Bradley Saul, the winner of the Simply Statistics Logo contest! We had some great entries which made it difficult to choose between them. You can see the new logo to the right of our home page or the … Continue reading → [Read more...]

Reproducible Research: With Us or Against Us?

November 15, 2012 | rdpeng

Last night this article by Chris Drummond of the Canadian National Research Council (Conseil national de recherches Canada) popped up in my Google Scholar alert. The title of the article, “Reproducible Research: a Dissenting Opinion” would seem to indicate that he disagrees … Continue reading → [Read more...]

Sunday Data/Statistics Link Roundup (11/4/12)

November 4, 2012 | Simply Statistics

Brian Caffo headlines the WaPo article about massive online open courses. He is the driving force behind our department’s involvement in offering these massive courses. I think this sums it up: `“I can’t use another word than unbelievable,” Caffo said. … Continue reading → [Read more...]

Stan for Bayesian Analysis

October 23, 2012 | Daniel Hocking

Bayesian analysis has been growing in popularity among ecologists recently, largely due to accessible books such as Models for Ecological Data: An Introduction, Introduction to WinBUGS for Ecologists, and Bayesian Methods for Ecology. Most ecologists with limited programming background have … Continue reading → [Read more...]

Color Palettes in HCL Space

October 12, 2012 | Jeff Allen

This is a quick follow-up to my previous post about Color Palettes in RGB Space. Achim Zeileis had commented that, perhaps, it would be more informative to evaluate the color palettes in HCL (polar LUV) space, as that spectrum more accurately describes how humans perceive color. Perhaps more clear trends ... [Read more...]

Where in the world is R and RStudio

October 1, 2012 | hadleywickham

Using the web logs collected when users download RStudio, we’ve prepared the following two maps showing where RStudio is being used, over the whole globe and just within the continental USA. Obviously this data is somewhat biased, as it reflects the number of downloads of RStudio, rather than the ... [Read more...]

Padding integers for use in filenames

September 29, 2012 | Corey Chivers

If you’ve ever written code that generates a whole whack of files, you may have came across the following problem when processing them. Using a naming convention wherein files are numbered will  gum up any ordering which is based on string sorting (ls, for example). What you end up ... [Read more...]

Changes in optimization performance of gcc over time

September 16, 2012 | Derek-Jones

The SPEC benchmarks came out a year after the first release of gcc (in fact gcc was and still is one of the programs included in the benchmark). Compiling the SPEC programs using the gcc option -O2 (sometimes -O3) has always been the way to measure gcc performance, but after 25 ... [Read more...]

Descriptive statistics of some Agile feature characteristics

September 2, 2012 | Derek-Jones

The purpose of software engineering research is to figure out how software development works so that the software industry can improve its quality/timeliness (i.e., lower costs and improved customer satisfaction). Research is hampered by the fact that companies are not usually willing to make public good quality data ... [Read more...]

Heatmap tables with ggplot2

August 20, 2012 | steve

I wrote before about heatmap tables as a better way of producing frequency or other tables, with a solution which works nicely in latex. It is possible to do them much more easily in ggplot2, like this library(Hmisc) library(ggplot2) library(reshape) data(HairEyeColor) P=t(HairEyeColor[,,2]) Pm=melt(... [Read more...]

Horizon plots with ggplot2, sort-of

August 19, 2012 | steve

The Timely Portfolio blog via R-bloggers has recently published some interesting entries about the value of horizon plots for visual comparison of a number of time series. Very nice it looks too. You can read more about them here. The trick to understanding them is to imagine that each row ...
[Read more...]

Using R from Inside Statistica

August 17, 2012 | inkhorn82

I’ve been spending a lot of time in the last month or so doing projects at work not statistics related, hence the lack of posts!  In the interim, I had to do some serious research on handling datasets bigger than … Continue reading → [Read more...]
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