Introduction Who knew Joy Division had a penchant for data visualization? there is an interesting story about Unknown Pleasures. Alex Whan previously posted some instructions on how to obtain the most influential Post-Punk front cover using ggplot2. Code I wanted to create a wallpaper from that and here's how I ... [Read more...]

by Ali Zaidi, Data Scientist at Microsoft # Apache Spark and a Tale of APIs Spark is an exceptionally popular processing engine for distributed data. Dealing with data in distributed storage and programming with concurrent systems often requires learning complicated new paradigms and techniques. Statisticans and data scientists familiar wtih R ... [Read more...]

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Interested in a career as a quantitive analyst? Working on a computational finance team? Well then, we've got great news! At DataCamp you can now enroll yourself and your team in an entirely new series of courses focused on Applied Finance with R. Lea... [Read more...]

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Weighted effect coding is a variant of dummy coding to include categorical variables in regression analyses, in which the estimate for each category represents the deviation of that category from the sample mean. The ‘wec’ ... [Read more...]

A new release of anytime is now on CRAN following the four releases in September and October. anytime aims to convert anything in integer, numeric, character, factor, ordered, ... format to POSIXct (or Date) objects -- and does so without requiring a format string. See the anytime page for a few ... [Read more...]

A minor release 0.0.3 of gettz arrived on CRAN two days ago. gettz provides a possible fallback in situations where Sys.timezone() fails to determine the system timezone. That can happen when e.g. the file /etc/localtime somehow is not a link into th... [Read more...]

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Ghana has always been getting flooded, but it seems that only floods in Accra are getting attention. I wrote about it here, and the key visualization was an animated map showing the floods in Ghana, and built in R. In this post, I document how I did it, hopefully you ... [Read more...]

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When the RStudio first came on the scene in February 2011, there wasn't much in the way of tools for developers using the R language. The R GUI on Windows and Mac had a basic code-editing window, and there were a couple of menu-based GUIs like Rattle and R Commander that ... [Read more...]

Background There are a few ways to approach the problem of a conditionally formatted table in R. You can use the ReporteRs package's FlexTable() function, the formattable package, or the condformat package. These allow you to produce a conditionally formatted tables in HTML. You can also use xtable package and ... [Read more...]

sparklyr is a new R front-end for Apache Spark, developed by the good people at RStudio. It offers much more functionality compared to the existing SparkR interface by Databricks, allowing both dplyr-based data transformations, as well as access to the machine learning libraries of both Spark and H2O Sparkling ... [Read more...]

shinyjs is a package that helps you easily improve the user interaction and user experience in your shiny apps. It has come a long way in the 1.5 years since it was first released, and today I’m happy to announce that version 0.8 is now on... [Read more...]

After using R for a few years people come to realize how inefficient loops are (in all languages), even after pre-allocating memory. Then you begin to use the apply functions and revel at their speed. However, once you have datasets __ 10-15 million the apply family can begin to creep along (... [Read more...]

Raccoon is a free web-book about Statistical Models with R. It's the collection of twenty years of notes, exercises and concepts working with statistics and R. This is the second section of the second chapter, about 2-sample t-test and paired t. The post Raccoon | Ch 2.2 – 2 sample t-test and paired t ... [Read more...]