We use R to take a very brief look at the distribution of e-book sales on Amazon.com. Recently Hugh Howey shared some eBook sales data spidered from Amazon.com: The 50k Report. The data is largely a single scrape of statistics about various anonymized books. Howey’s analysis tries to break sales down by declared category andRelated posts:
The Mountain View Voice is a weekly newspaper serving the Silicon Valley area, and is a familiar sight to anyone wandering the streets of Palo Alto or Menlo Park....
A couple of weeks ago, I participated in a panel discussion for DM Radio: "Still Sexy? How's that Data Scientist Gig Working Out?". The title was provocative, but the...
Just after Easter, I'll go for a very quick trip to lovely Girona, where Marc Saez has invited me to give two talks.The first one will be a re-run...
As I often manipulate time series from different sources, I rarely come across the same date format twice. Having to reformat the dates every time is a real waste...
We are happy to introduce Reot, an R package designed for empirical orthogonal teleconnection (EOT) analysis of gridded geo-scientific space-time data based on the method by van den Dool...
Gitbook has been getting some (deserved) attention. For those who haven’t seen it, Gitbook is a system to create really beautiful interactive web (or PDF and ebook) books....
Publishing in GitHub Publishing in GitHubI struggled to make my first repository in GitHub. I finally found out the steps to...
Dear all, recently I have designed a database for Multiple Myeloma, which can easily be extended to include other malignancies and chronic diseases.The database and its guide can be...
Geomorph users,The function physignal() in version 2.0 has a mistake in the manual regarding the input matrix: only 3D array can be used at this time. The next version will have...
by Joseph Rickert One of the remarkable features of the R language is its adaptability. Motivated by R’s popularity and helped by R’s expressive power and transparency developers working...
Hadley Wickam released the dplyr package in January 2014. Since then I have been itching to give it a try as it has been suggested to speed up some...
Myfxbook provides an interface to your FOREX trading accounts as well as an active trading community. It has a broad range of functionality including a responsive interface to the...
Editor's note: This is a guest post from Matt Sundquist form the Plot.ly team.You can access the source code for this post at https://gist.github.com/sckott/10991885Ggplotly and
Ethan Siegel wrote a post entitled The Math of the Fastest Human Alive five years ago, using regressions. An alternative is too use extreme value models (I wrote a post a...
BitsanityThe awesome folks at Quandl (an amazing data collection and distribution service) have been so kind as to allow me to write for their blog.In my first post for...
As a language for statistical computing, R has always had a bias towards linear algebra, and is optimized for operations dealing in complete vectors and matrixes. This can be...
This is a follow-up blog-post to an earlier introductory post by Steven Brey: Using R: Working with Geospatial Data. In this post, we’ll learn how to plot geospatial data in...
I’m pleased to announce that a rewrite of my first chapter of “Modeling Data With Functional Programming In R” is …Continue reading →
Here are my notes from a recent talk I gave on vectorization at a Davis R Users’ Group meeting. Thanks to Vince Buffalo, John...
Dear geomorph users,version 2.0 of geomorph brings new developments in how shape deformations from 3D coordinate shape data can be viewed. We have implemented warping of 3D surface files...
Geomorph users,We have uploaded version 2.0 to CRAN. The windows and mac binaries have been compiled and the tarball is available.Version 2.0 comes with substantial changes and new features: New function...
Dear R users, the May 2014 public training course schedule for Milano (Italy) based courses is as follows: Web Applications with R and Shiny May 15, 2014 Reports in...
The MAPE (mean absolute percentage error) is a popular measure for forecast accuracy and is defined as where denotes an observation and denotes its forecast, and the...
(Generalized) Linear models make some strong assumptions concerning the data structure: Independance of each data points Correct distribution of the residuals Correct specification of the variance structure Linear relationship...
Editor's note: This is the first in a series of posts from rOpenSci's recent hackathon.I recently had the pleasure of participating in rOpenSci's hackathon. To be honest,...
As I mentioned in my previous blog post, Government of India have started an Open Data Portal for making various data public. Most of the data-sets on the portal...
I recently posted on the addition of ageKeyPlot() to the FSA package for visualizing age-length keys. Since that post, I have added one more type of plot as illustrated...
At Oracle our goal is to enable you to get timely insight from all of your data. We continuously enhance Oracle Database to allow workloads that have traditionally required...
Plotly: collaborative, publication-quality graphing. 
