Tag: R

Feed: R-bloggers. Author: Nick Horton. A previous entry (http://sas-and-r.blogspot.com/2017/07/options-for-teaching-r-to-beginners.html) describes an approach to teaching graphics in R that also “get[s] students doing powerful things quickly”, as David Robinson suggested. In this guest blog entry, Randall Pruim offers an alternative way based on a different formula interface. Here’s Randall: For a number of years I and several of my colleagues have been teaching R to beginners using an approach that includes a combination of the lattice package for graphics, several functions from the stats package for modeling (e.g., lm(), t.test()), and the mosaic package for numerical summaries and for smoothing over edge cases and inconsistencies in the other two components. Important ... Read More

Feed: R-bloggers. Author: R Views. Editors Note: It has been heartbreaking watching the images from México City. Teresa Ortiz, co-organizer of R-Ladies CDMX reports on efforts of data scientists to help. Our thoughts are with them, and with the people of México. It has been a hard couple of days around here. In less than 2 weeks, México has gone through two devastating earthquakes and the damages keep adding. Nevertheless, the response from the citizens has been outstanding and Mexican data-driven initiatives have not stayed behind. An example is codeandoMexico, an open innovation platform which brings together top talent through ... Read More

Feed: R-bloggers. Author: Peter Prevos. Euler Problem 32 returns to pandigital numbers, which are numbers that contain one of each digit. Like so many of the Euler Problems, these numbers serve no practical purpose whatsoever, other than some entertainment value. You can find all pandigital numbers in base-10 in the Online Encyclopedia of Interegers (A050278). The Numberhile video explains everything you ever wanted to The Numberhile video explains everything you ever wanted to know about pandigital numbers but were afraid to ask. Euler Problem 32 Definition We shall say that an n-digit number is pandigital if it makes use of ... Read More

Feed: R-bloggers. Author: @aschinchon. Well I walk upon the river like it’s easier than land(Love is All, The Tallest Man on Earth) The Metropolitan Museum of Art provides here a dataset with information on more than 450.000 artworks in its collection. You can do anything you want with these data: there are no restrictions of use. Each record contains information about the author, title, type of work, dimensions, date, culture and  geography of a particular piece. I can imagine a bunch of things to do with these data but since I am a big fan of highcharter,  I have done ... Read More

Feed: Hortonworks Blog – Hortonworks. Author: Vinay Shukla. Our customers increasingly leverage Data Science, and Machine Learning to solve complex predictive analytics problem. A few examples of these problems are churn prediction, predictive maintenance, image classification, and entity matching. While everyone wants to predict the future, truly leveraging Data Science for Predictive Analytics remains the domain of a select few. To expand the reach of Data Science, the Modern Data Architecture (MDA) needs to address the following 4 requirements: Enable Apps to consume predictions and become smarter Bring predictive analytics to the IOT Edge Become easier, more accurate & faster ... Read More

Feed: MapD Blog - Thoughts on GPU databases, data visualization and integrated analytics. Author: Marc Balaban. I’d say I kinda love basketball. I spend far too much time prowling reddit.com/r/nba and other basketball forums gathering the latest buzz from around the league. Being that I work in the data analytics space, I’m always on-watch for statistical insights that Kerr or Lue might have missed.I recently came across Big Data Ball, an NBA stats distributor. They offered a dataset called: “NBA Play-By-Play Stats – 2004 to 2017”. It includes all events that occur in a game including: active lineups, shot distances, ... Read More

Feed: R-bloggers. Author: David Smith. Changes are coming to the internals of the R engine which promise to improve performance and reduce memory use, with dramatic impacts in some circumstances. The changes were first proposed by Gabe Becker at the DSC Conference in 2016 (and updated in 2017), and the implementation by Luke Tierney and Gabe Becker is now making its way into the development branches of the R sources. ALTREP is an alternative way of representing R objects internally. (The details are described in this draft vignette, and there are a few more examples in this presentation.) It's easiest to illustrate by ... Read More

Feed: R-bloggers. Author: Antoine Guillot. D3partitionR is an R package to visualize interactively nested and hierarchical data using D3.js and HTML widget. These last few weeks I’ve been working on a major D3partitionR update which is now available on GitHub. As soon as enough feedbacks are collected, the package will be on uploaded on the CRAN. Until then, you can install it using devtools library(devtools) install_github("AntoineGuillot2/D3partitionR") Here is a quick overview of the possibilities using the Titanic data: A major update This update is a major update from the previous version which will break code from 0.3.1 New functionalities Treemap ... Read More

Feed: R-bloggers. Author: Dave Giles. Past posts on this blog have included several relating to Monte Carlo simulation – e.g., see here, here, and here. Recently I came across a great article by Matthew Sigal and Philip Chalmers in the Journal of Statistics Education. It’s titled, “Play it Again: Teaching Statistics With Monte Carlo Simulation”, and the full reference appears below. The authors provide a really nice introduction to basic Monte Carlo simulation, using R. In particular, they contrast using a “for loop” approach, with using the “SimDesign” R package (Chalmers, 2017).  Here’s the abstract of their paper: “Monte Carlo ... Read More

Feed: R-bloggers. Author: Thinking inside the box. A first update 0.0.2 of the pinp package arrived on CRAN just a few days after the initial release. We added a new vignette for the package (see below), extended a few nice features, and smoothed a few corners. The NEWS entry for this release follows. Changes in tint version 0.0.2 (2017-09-20) The YAML segment can be used to select font size, one-or-two column mode, one-or-two side mode, linenumbering and watermarks (#21 and #26 addressing #25) If pinp.cls or jss.bst are not present, they are copied in ((#27 addressing #23) Output is now ... Read More