R is a functional language, which means that your code often contains a lot of ( parentheses ). And complex code often means nesting those parentheses together, which make code hard to read and understand. But there's a very handy R package — magrittr, by Stefan Milton Bache — which lets you transform nested function calls into a simple...
Making random draws from an arbitrarily defined pdf
I recently found myself in need of a function to sample randomly from an arbitrarily defined probability density function. An excellent post by Quantitations shows how to accomplish this...
Flood fill a region of an active device in R
The following is a function to "flood fill" a region on the active plotting device. Once called, the user will be asked to click on the desired target region....
Uncovering the Preferences Shaping Consumer Data: Matrix Factorization
How do you limit your search when looking for a hotel? Those trying to save money begin with price. Members of hotel reward programs focus on their brand. At other...
New data packages
I’ve released four new data packages to CRAN: babynames, fueleconomy, nasaweather and nycflights13. The goal of these packages is to provide some interesting, and relatively large, datasets to demonstrate...
Plotting the characteristic roots for ARIMA models
When modelling data with ARIMA models, it is sometimes useful to plot the inverse characteristic roots. The following functions will compute and plot the inverse roots for any fitted...
Advanced R Profiling with pbdPAPI
R has some extremely useful utilities for profiling, such as system.time(), Rprof(), the often overlooked tracemem(), and the rbenchmark package. But if you want more than just simple timings...
Chart from R + Color from Javascript
Another color experiment combining resources from R and Javascript. I just wish I could do Mean Phylogenetic Distance in Javascript like rPlotter. I enjoyed using d3.js zoom behavior to...
Rcpp11 3.1.1
R 3.1.1 was released a few days ago, and as part of the policy we are trying to follow for Rcpp11 releases, here is Rcpp11 3.1.1. Sorry for the...
Announcing Packrat v0.4
We’re excited to announce a new release of Packrat, a tool for making R projects more isolated and reproducible by managing their package dependencies. This release brings a number...
Intermission: A Data File For Futures Data (from Quandl)
So between variations of different strategies, for those who have yet to come across it, my IKTrading package has a … Continue reading →
Comrades Marathon: A Race for Geriatrics?
It has been suggested that the average Comrades Marathon runner is gradually getting older. As an “average runner” myself, I will not deny that I am personally getting older....
How to Choose an R-Trainer?
by James Peruvankal There are plenty of options if you want to learn R and are looking for training: your college’s statistics department, massive open online courses like Coursera,...
Rcpp11 t-shirt sightseeing
While we wait for CRAN to process the release of Rcpp11 3.1.1, here are some news about the Rcpp11 t-shirt. With more than 40 attendees, the Rcpp11 tutorial was...
Things I Forget: Push/Pull Greyed out in RStudio?!?
So, on more than one occasion I have set up a repository locally, then on GitHub and pushed to that repo from the shell. This works great, but this...
Introducing tidyr
tidyr is new package that makes it easy to “tidy” your data. Tidy data is data that’s easy to work with: it’s easy to munge (with dplyr), visualise (with...
Note to self: brew cleanup r
Note to self: after updating R with Homebrew remember to cleanup old versions: brew cleanup r Otherwise I'm liable to get a segfault. (see also)
EARL Conference, London, 15-17 September 2014
EARL (Effective Applications of the R Language) is a unique conference dedicated to the growing commercial usage and business applications of R. We currently have less than 100 delegate places...
A Handy Trick for Remote Graphics
I often create plots that require quite a bit of computation. Ideally I would run this on what I’ll call Machine A, which is a very fast machine, but...
Notes from the 2nd R in Insurance Conference
The 2nd R in Insurance conference took place last Monday, 14 July, at Cass Business School London. This one-day conference focused once more on applications in insurance and actuarial...
There’s no mistake in the barley data
Statistics has many canonical data sets. For classification statistics, we have the Fisher's iris data. For Big Data statistics, the canonical data set used in many examples is the...
UseR 2014, days 3-4
Three weeks ago, I’d commented on the first two days of the UseR 2014 conference. I’m finally back to talk about the second half. Dirk Eddelbuettel on Rcpp Dirk...
Geomorph update 2.1.1 now available!
Geomorph users,We have uploaded version 2.1.1 to CRAN. The windows and mac binaries have been compiled and the tarball is available.Version 2.1.1 contains small updates and fixes a few small bugs.New...
Master interactive documents at the Shiny Dev Center
We’ve added a new section of articles to the Shiny Development Center. These articles explain how to create interactive documents with Shiny and R Markdown. You’ll learn how to...
Income distribution and Tour de France
A few days ago, Jean-François Mignot published an interesting article entitled Tour de France 2014 : pourquoi le vainqueur gagne 100 fois plus que le 10e. In this article, we have...
How to update and backup a MySQL database under version control and all within Rstudio
I am trying to have better workflows to ensure data quality and two important things for me are first, scripting as much as posible the data manipulation process, and...
Changes in rnoaa v0.2.0
We just released v0.2 of rnoaa. For details on the update, see the release notes. What follows are some notes on the more important changes. Updating to v0.2 Install rnoaa...
Weekly Variability Simulation of Fantasy Football Projections
In this post, I show how to estimate players’ week-to-week variability in fantasy football points. In a prior post, I demonstrated how to calculate a player’s risk level, as...
Graphing football world cup shots with rCharts
So, the FIFA World Cup is over. Germany won. Yay!Now with so much less football matches to watch, I tried the awesome new R package rCharts by Ramnath Vaidyanathan. In...
Plotly: collaborative, publication-quality graphing.
