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 them I demonstrate (with detailed R code) how a user of their free data services co...
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...
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...
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...
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...
Image by Ennio Pozzetti In this post I will explore some of the movements in markets in recent years, these movements have caught many by surprise resulting in...
I enjoyed talking to University of Alabama students this morning about wealth, skill, and luck. I tried to synthesize a whole lot of research into something meaningful. Of course,...
by Daniel Hanson Last time, we looked at the four-parameter Generalized Lambda Distribution, as a method of incorporating skew and kurtosis into an estimated distribution of market returns, and...
GoogleVis 0.5.1 was released on CRAN yesterday. New Features New functions gvisSankey, gvisAnnotationChart, gvisHistogram,gvisCalendar and gvisTimeline to support the new Google charts of the same names (without 'gvis'). New...
This is the third in my series of three posts on my package freqparcoord with Yingkang Xie. (My next post after this will show how to use R to...
This post shares the video from the talk presented in 2014 by Eu Jin Lok on mining tweets with R presented at Melbourne R Users. Twitter is currently ranked...
Yesterday's release of RcppBDT 0.2.3 lead to an odd build error. If one used at the same time a 32-bit OS, a compiler as recent as g++ 4.7 and the Boost...
A new Task View on CRAN will be of anyone who needs to connect R with Web-based applications. The Web Technologies and Services Task View lists R functions and...
Kevin Cartier writes: I’ve been happily using R for a number of years now and recently came across Stan. Looks big and powerful, so I’d like to pick an...
Rick Wicklin showed how to make a Hilbert matrix in SAS/IML. Rick has a nice discussion of these matrices and why they might be interesting; the value of...
Check out PDF for Equations And Code to run yourselfIntroduction: “This Time is different” by Reinhart and Rogoff is an empirical history of financial crises and panics....
(This article was first published on Econometrics by Simulation, and kindly contributed to R-bloggers) The Homeless Econometrician: Black Box SoftwareChoosing to go open source is a big deal. It...
The 'regex' family of languages and commands is used for manipulating text strings. More specifically, regular expressions are typically used for finding specific patterns of characters and replacing them with others....
We've received a number of questions from our users about dealing with the finer details of data sources on the web. Whether you're reading data from local storage such...
The 'regex' family of languages and commands is used for manipulating text strings. More specifically, regular expressions are typically used for finding specific patterns of characters and replacing them with others....
A new release of the RcppBDT package is now on CRAN.Several new modules were added; the package can now work on dates, date durations, "ptime" (aka posix time), and...
A few days ago, the Centers for Medicare and Medicaid Services (CMS) released some unprecedented data on the US healthcare system. The data consists of 9 million rows...
Social Science Goes R: Weighted Survey Data Survey Data: Computing Your Own Weights...
ggplot2 tries to make it super easy to add country or state borders to your map, and for the most part it works great as long as you include...
Plotly: collaborative, publication-quality graphing. 
