Blog Archives

R and Interactive Graphics

August 6, 2017
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R and Interactive Graphics

Judging from the number of JSM talks that incorporated interactive visualizations of some sort or another, it appears that interactive graphics have captured the attention of a good many statisticians. I found this a little surprising. Statisticians, on the whole, are not easily impressed by “eye candy”, and I believe that there are many, like me, who think that...

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A Postcard from JSM

August 1, 2017
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A Postcard from JSM

Baltimore has the reputation of being a tough town: hot in the summer and gritty, but the convention center hosting the Joint Statistical Meetings is a pretty cool place to be. There are thousands of people here and so many sessions (over 600) that it’s just impossible to get an overview of all that’s going on. So, here are...

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Looking for R at JSM

July 27, 2017
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I am very much looking forward to attending JSM which begins this Sunday. And once again, I will be spending a good bit of my time hunting for new and interesting applications of R. In years gone by, this was a difficult game at JSM because R, R Package, Shiny, tidyverse and the like did not often turn up...

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June 2017 New Package Picks

July 25, 2017
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June 2017 New Package Picks

Two hundred and thirty-eight new packages were added to CRAN in June. Below are my picks for the “Top 40”, organized into six categories: Biostatistics, Data, Machine Learning, Miscellaneous, Statistics and Utilities. Some packages, including geofacet and secret, already seem to be gaining traction. Biostatistics BIGL v1.0.1: Implements response surface methods for drug synergy analysis, including generalized and classical Loewe formulations...

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Visualizing Portfolio Volatility

July 20, 2017
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This is the third post in our series on portfolio volatility, variance and standard deviation. If you want to start at the beginning with calculating portfolio volatility, have a look at the first post here - Intro to Volatility. The second post on calculating rolling standard deviations is here: Intro to Rolling Volatility. Today we will visualize rolling standard deviations...

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Some Ideas for your Internal R Package

July 18, 2017
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Some Ideas for your Internal R Package

At RStudio, I have the pleasure of interacting with data science teams around the world. Many of these teams are led by R users stepping into the role of analytic admins. These users are responsible for supporting and growing the R user base in their organization and often lead internal R user groups. One of the most successful strategies to...

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Introduction to Rolling Volatility

July 17, 2017
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This is the second post in our series on portfolio volatility, variance and standard deviation. If you missed the first post and want to start at the beginning with calculating portfolio volatility, have a look here - Introduction to Volatility. We will use three objects created in that previous post, so a quick peek is recommended. Today we focus on...

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The R Survey

July 12, 2017
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The R Survey

The R Consortium is undertaking a multi-year effort to survey the whole R world. In a rather low-key blog post at the end of last month, the R Consortium’s technical committee, the Infrastructure Steering Committee (ISC), launched its prototype survey of R users. The idea is to use the information gleaned from the exploratory questions in this first survey...

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Introduction to Volatility

July 11, 2017
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This is the beginning of a series on portfolio volatility, variance, and standard deviation. I realize that it’s a lot more fun to fantasize about analyzing stock returns, which is why television shows and websites constantly update the daily market returns and give them snazzy green and red colors. But good ol’ volatility is quite important in its own...

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Control Systems Toolbox in R – a GSoC 2017 Project

July 5, 2017
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Control Systems Toolbox in R – a GSoC 2017 Project

Introduction Control theory is an interdisciplinary branch of mathematics and engineering that has the objective of controlling physical systems. A control system is a device or a collection of devices that manage, command, direct or regulate the behavior of other devices or systems. Control systems engineering is a major application of control theory, and involves the study, design/modeling of automatic...

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