.fusion-fullwidth-1 { padding-left: px !important; padding-right: px !important; }by Jonathan Regenstein Financial applications were an early driving force behind the adopt... [Read more...]

Text Mining has become quite mainstream nowadays as the tools to make a reasonable text analysis are ready to be exploited and give astoundingly nice and reasonable results. At BNOSAC, we use it mainly for text mining on call center data, poetry, salesforce data, emails, HR reviews, IT logged tickets, ... [Read more...]

A new package crul is on CRAN. crul is another HTTP client for R, but is relatively simplified compared to httr, and is being built to link closely with webmockr and vcr. webmockr and vcr are packages ported from Ruby's webmock and vcr, respectively. They both make mocking HTTP requests ... [Read more...]

I have been reading more and more about how people can’t interpret charts… which kinda never occurred to me, if I’m gonna be very honest.  Anyway, it kind of made me think of actually testing people informally, to see for myself. So I’ve been doing just that: ... [Read more...]

In this post we’ll create a Filled Chord Diagram using plotly. The post is inspired by Plotly’s Python documentation. Install / update packages Just to ensure we are working with the latest dev version of plotly. [crayon-5822c30650161761327802/] Dataset The dataset we’ll use consists of the number of ... [Read more...]

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...]