Reflections on the 10th anniversary of the Revolutions blog

December 10, 2018
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On December 9 2008, very nearly ten years ago, the first post on Revolutions was published. Way back then, this blog was part of a young startup called Revolution Computing, which later became Revolution Analytics. (That name persists to this day in the URL of this blog.) The idea at that time was to introduce the world to a...

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The ‘knight on an infinite chessboard’ puzzle: efficient simulation in R

December 10, 2018
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The ‘knight on an infinite chessboard’ puzzle: efficient simulation in R

Previously in this series: The “lost boarding pass” puzzle The “deadly board game” puzzle I’ve recently been enjoying The Riddler: Fantastic Puzzles from FiveThirtyEight, a wonderful book from...

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ggmap Tutorial Updated!

December 10, 2018
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ggmap Tutorial Updated!

The ggmap tutorial has been updated to address the Google Static Map API service issues.

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Failure Pressure Prediction Using Machine Learning

December 10, 2018
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Failure Pressure Prediction Using Machine Learning

CategoriesRegression Models Tags ggplot2 Machine Learning Prediction R Programming In this post, the failure pressure will be predicted for a pipeline containing a defect based solely on burst test results and learning machine models. For...

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{remedy} is now on CRAN

December 10, 2018
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{remedy} is now on CRAN

After living for more than a year on GitHub, we are pleased to announce that the {remedy} package is now on CRAN.  A package for easier Markdown writing About...

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Day 10 – little helper %nin%

December 10, 2018
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Day 10 – little helper %nin%

We at STATWORX work a lot with R and we often use the same little helper functions within our projects. These functions ease our daily work life by reducing...

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The Need for Speed Part 1: Building an R Package with Fortran (or C)

December 9, 2018
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The Need for Speed Part 1: Building an R Package with Fortran (or C)

Searching for Speed Everyone who has ever used R has, at one time or another, wished for an increase in R’s speed. If you haven’t, you’re not using R...

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An 8-hour course on R and Data Mining

December 9, 2018
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I will run an 8-hour course on R and Data Mining at Black Mountain, CSIRO, Australia on 10 & 13 December 2018. The course materials, incl. slides, R scripts...

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CRAN Release of R/exams 2.3-2

December 9, 2018
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CRAN Release of R/exams 2.3-2

New minor release of the R/exams package to CRAN, containing a range of smaller improvements and bug fixes. Notably scanning of...

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Interesting packages taken from R/Pharma

December 9, 2018
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Interesting packages taken from R/Pharma

A few month ago I joined the R/Pharma conference in Cambridge, MA. As a take away I thought of my project and how I can improve, with solutions others provided....

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Canada Map

December 9, 2018
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Canada Map

I taught my Data Visualization seminar in Philadelphia this past Friday and Saturday. It covers most of the content of my book, including a unit on making maps. The...

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Smartly select and mutate data frame columns, using dict

December 9, 2018
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Smartly select and mutate data frame columns, using dict

Motivation Column operations Add Modify Remove Benchmark Summary Motivation The dplyr functions select and mutate nowadays are commonly applied to perform data.frame column operations, frequently combined with magrittrs forward %__% pipe. While...

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Day 09 – little helper object_size_in_env

December 9, 2018
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Day 09 – little helper object_size_in_env

We at STATWORX work a lot with R and we often use the same little helper functions within our projects. These functions ease our daily work life by reducing...

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Having bit of party with Material Colour Palette

December 8, 2018
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Having bit of party with Material Colour Palette

Continuing on with my “slight?” obsession with colours… I love colours in “Material Colour Palette”. There various website that will lets you grab the colours by clicking, such as...

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transformr: Age of Spatial

December 8, 2018
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transformr: Age of Spatial

Once again, I gives me great pleasure to announce a new package has joined CRAN. transformr is the spatial brother of tweenr and as with the tweenr update a few months...

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Interactive panel EDA with 3 lines of code

Interactive panel EDA with 3 lines of code

Exploratory data analysis is important, everybody knows that. With R, it is also easy. Below you see three lines of code that allow you to interactively explore the Preston...

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confint3: 2-Sided Confidence Interval (Extended Moodle Version)

December 8, 2018
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confint3: 2-Sided Confidence Interval (Extended Moodle Version)

Exercise template for computing the 2-sided confidence interval (with extended Moodle processing) for the mean based on a random sample. ...

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It was twenty years ago …

December 8, 2018
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… this week that I made a first cameo in the debian/changelog for the Debian R package: r-base (0.63.1-1) unstable; urgency=low New upstream release Linked html directory to /usr/doc/r-base/doc/html (Dirk Eddelbuettel) –...

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Timing Grouped Mean Calculation in R

December 8, 2018
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Timing Grouped Mean Calculation in R

This note is a comment on some of the timings shared in the dplyr-0.8.0 pre-release announcement. The original published timings were as follows: With performance metrics: measurements are marketing....

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Automated Dashboard visualizations with distribution in R

December 8, 2018
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Automated Dashboard visualizations with distribution in R

CategoriesProgramming Tags Data Visualisation R Markdown R Programming In this article, you learn how to make Automated Dashboard visualizations with distribution in R. First you need to install the `rmarkdown` package into your R...

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R:case4base – Sorting data with base R

December 8, 2018
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R:case4base – Sorting data with base R

Introduction In this post in the R:case4base series we will examine sorting (ordering) data in base R. We will learn to sort our data based on one or multiple columns,...

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Day 08 – little helper intersect2

December 8, 2018
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Day 08 – little helper intersect2

We at STATWORX work a lot with R and we often use the same little helper functions within our projects. These functions ease our daily work life by reducing...

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“Increase sample size until statistical significance is reached” is not a valid adaptive trial design; but it’s fixable.

December 7, 2018
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TLDR: Begin with N of 10, increase by 10 until p __ 0.05 or max N reached. This design has inflated type-I error. Lower p-value threshold needed to ensure...

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Automated Dashboard Visualizations with Ranking in R

December 7, 2018
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Automated Dashboard Visualizations with Ranking in R

CategoriesProgramming Tags Data Visualisation R Markdown R Programming In this article, you learn how to make Automated Dashboard Visualizations with Ranking in R. First you need to install the `rmarkdown` package into your R...

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Shinyfit: Advanced regression modelling in a shiny app

December 7, 2018
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Shinyfit: Advanced regression modelling in a  shiny app

Many of our projects involve getting doctors, nurses, and medical students to collect data on the patients they are looking after. We want to involve many of them in...

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R community update: announcing useR Delhi December meetup and CFP

December 7, 2018
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R community update: announcing useR Delhi December meetup and CFP

Time really does fly. It’s been 5 months since Delhi NCR useR group had come into being and our first meetup. It was a successful event which included sessions...

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Day 07 – little helper count_na

December 7, 2018
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Day 07 – little helper count_na

We at STATWORX work a lot with R and we often use the same little helper functions within our projects. These functions ease our daily work life by reducing...

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Bayesian Nonparametric Models in NIMBLE, Part 2: Nonparametric Random Effects

December 6, 2018
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Bayesian Nonparametric Models in NIMBLE, Part 2: Nonparametric Random Effects

Bayesian nonparametrics in NIMBLE: Nonparametric random effects Overview NIMBLE is a hierarchical modeling package that uses nearly the same language for model specification as the popular MCMC packages WinBUGS,...

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Rrrrs in R – Letter frequency in R package names

December 6, 2018
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Rrrrs in R – Letter frequency in R package names

R package authors sometimes like to add the letter “r” to package names (for example, the tidyverse packages). baRcodeR also has an extra “r” at the end as well....

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