Another hotly anticipated FOMC meeting kicks off next week, so I thought it would be timely to highlight a less well-known working paper, “Stock Returns over the FOMC Cycle”, by Cieslak, Morse and Vissing-Jorgensen (current draft June 2014). Its main result is:Over the last 20 years, the average excess return on ... [Read more...]

More and more frequently I come across people who express an interest in R, and I thought I would share some advice to help people decide if R is something they should use, as well as some high level advice on getting started. Most of these people are developers with ... [Read more...]

Thanks to some very thoughtful reviews, I have dramatically updated the Mortality and Age Comparisons chapters in the Introduction to Fisheries Analysis with R book. Changes to the Age Comparisons chapter in particular resulted in major changes to the FSA … Continue reading → [Read more...]

The two previous posts described how you can make histograms with basic R and the ggplot2 package. This third and last part of our histograms tutorial will look at how to make a histogram with ggvis. This package is similar to ggplot2, as it is also based on “the grammar ... [Read more...]

Editorial Note: The following post was kindly contributed by Steven Pav. Why Drat? After playing around with drat for a few days now, my impressions of it are best captured by Dirk's quote: It just works. Demo To get some idea of what I mean by this, suppose you are ... [Read more...]

# Recombine Test + Training ———————————————– a [Read more...]

The second column is simply the first column divided by the variance of the response that have been OOB up to that point (20 trees), times 100. Source: https://stat.ethz.ch/pipermail/r-help/2008-July/167748.html [Read more...]

Just use qplot(votes, rating, data = movies) + geom_smooth() [Read more...]

You thought it was Hadley Wickham, right? Nope! ggplot2 comes from  Grammar of Graphics developed by Leland Wilkinson [Read more...]

Just use panel.lmline() [Read more...]

  ____  sample_size = 10 ____  R.eval “x __  R.eval “summary(x)” ____  R.eval “sd(x)” With a here document: require "rinruby" #Set all your variables in Ruby n = 10 beta_0 = 1 beta_1 = 0.25 alpha = 0.05 seed = 23423 R.x = (1..n).entries #Use actual R code to perform the analysis R.eval […] [Read more...]

[Read more...]

If you want to copy data from an R variable named rdat into the Windows clipboard (for example, to copy into Excel) use: [Read more...]

DeployR is a server-based framework that provides simple, secure R integration for application developers. It's available in two editions: DeployR Open, which is free and open-source; and Revolution R Enterprise DeployR, which adds a scalable grid framework and enterprise authentication features for production applications integrated with R. If you're looking ... [Read more...]

Introduction Being a teacher can be a very gratifying job. If you teach programming, which is your favorite hobby too, nothing can be better than that. Only thing can spoil your dream: cheating students. As we all know, one can…Read more › [Read more...]

In preparation for using some of our streamgraphs for production (PDF/print) graphics, I ended up having to hand-edit labels in on one of the graphics in an Adobe product. This bumped up the priority on adding annotation functions to the streamgraph package (you really don’t want to have ... [Read more...]

In our previous post you learned how to make histograms with the hist() function. You can also make a histogram with ggplot2, “a plotting system for R, based on the grammar of graphics”. This post will focus on making a Histogram With ggplot2. Want to learn more? Discover the DataCamp ... [Read more...]

We are pleased to announce our proposal 'Subsetted and parallel computations in matrixStats' for Google Summer of Code. The project is aimed for a student with experience in R and C, it runs for three months, and the student gets paid 5500 USD by Google. Students from (almost) all over the ... [Read more...]

by Joseph Rickert What will you be doing at 26 minutes and 53 seconds past 9 this coming Saturday morning? I will probably be running simulations. I have become obsessed with an astounding result from number theory and have been trying to devise Monte Carlo simulations to get at it. The result, well ... [Read more...]

The good reasons to write scientific reports and manuscripts in LaTeX or Markdown are: improved document integrity (always), simplicity (not always) and reproducibility (always). I prefer the lightweight Markdown over rich but more complex LaTeX -- I think that lightweight is good for reproducibility. I am also in love with … ... [Read more...]