Category: R

Feed: R-bloggers. Author: R Views. Roland Stevenson is a data scientist and consultant who may be reached on Linkedin. When accessing an API or database in R, it is often necessary to provide credentials such as a login name and password. You may find yourself being prompted with something like this: When writing an R script that requires a user to provide credentials, you will want a way to have the script prompt the user or, better yet, programatically provided the credentials in the R script. Either way, be careful! You don’t want to put your credentials out there in ... Read More

Feed: R-bloggers. Author: quantixed. Our lab is international. People born all over the world have come to work in my group. I’m proud of this fact, especially in the current political climate. I’ve previously used the GoogleMaps API to display a heat map on our lab webpage. It shows where in the world people in the lab come from. This was OK, but I wanted to get an R based solution to make this graphic to make it easier to automate updates. This post is an explainer and “how to” guide. Code and some example data are here. The idea ... Read More

Feed: R-bloggers. Author: Matt.0. Related R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web Scraping) statistics (regression, PCA, time series, trading) and more... If you got this far, why not subscribe for updates from the site? Choose your flavor: e-mail, twitter, RSS, or facebook ... Read More

Feed: R-bloggers. Author: Econometrics and Free Software. There’s a lot going on in the development version of {tidyr}. New functions for pivoting dataframes, pivot_wide() and pivot_long() are coming, and will replace the current functions,spread() and gather(). spread() and gather() will remain in the package though: You may have heard a rumour that gather/spread are going away. This is simply not true (they’ll stay around forever) but I am working on better replacements which you can learn about at https://t.co/sU2GzWeBaf. Now is a great time for feedback! #rstats — Hadley Wickham (@hadleywickham) March 19, 2019 If you want to try out ... Read More

Feed: R-bloggers. Author: Bob Muenchen. In my previous post, I discussed Gartner’s reviews of data science software companies. In this post, I show Forrester’s coverage and discuss how radically different it is. As usual, this post is already integrated into my regularly-updated article, The Popularity of Data Science Software. Forrester Research, Inc. is another company that reviews data science software vendors. Studying their reports and comparing them to Gartner’s can provide a deeper understanding of the software these vendors provide. Historically, Forrester has conducted their analyses similarly to Gartner’s. That approach compares software that uses point-and-click style software like KNIME, to ... Read More

Feed: R-bloggers. Author: Ryan Sheehy. Hugo Bowne-Anderson, the host of DataFramed, the DataCamp podcast, recently interviewed Skipper Seabold, a Director of Data Science at Civis Analytics. Hugo: Hi there, Skipper, and welcome to Data Framed. Skipper: Thanks. Happy to be here. Hugo: Great to have you on the show. I’m really excited to talk about all the things you’ve been thinking about with respect to the current, looming, future credibility crisis in data science, how we can think about what the science in data science actually is and how to put it in there in a more robust fashion. But ... Read More

Feed: R-bloggers. Author: Ben Wolstenholme. RStudio have recently announced ‘RStudio Connect QuickStart’ which is a VM containing a full suite of RStudio’s pro tools, available to be trialled for a 45 day period. RStudio Connect Quickstart allows R users and people exploring the idea of using R in production, a quick and easy way to set-up a full, production-like environment that contains all of RStudio’s enterprise-grade products. In essence, RStudio Connect quickstart is a virtual machine appliance that when used with your favourite virtualisation software (Virtualbox,VMWare etc) will create a ready to use environment containing the following tools; RStudio Server ... Read More

Feed: R-bloggers. Author: John Mount. We recently commented on excess package dependencies as representing risk in the R package ecosystem. The question remains: how much risk? Is low dependency a mere talisman, or is there evidence it is a good practice (or at least correlates with other good practices)? Well, it turns out we can quantify it: each additional non-core package declared as an “Imports” or “Depends” is associated with an extra 11% relative chance of a package having an indicated issue on CRAN. At over 5 non-core “Imports” plus “Depends” a package has significantly elevated risk. The number of ... Read More

Feed: R-bloggers. Author: Fabian Scheler. Categories Getting Data Tags Data Management Plot R Programming Since the initial publication of the Three Factor Model by Eugene Fama and Kenneth French in their influential 1993 paper (Common Risk Factors in the Returns of Stocks and Bonds) a lot of academic research has been dedicated to the analysis of factors driving security returns. With the rise of quantitative investment management, this field has also attracted increasing awareness of practitioners trying to find factors that help them to select securities that generate superior returns or analyze the driving forces behind realized portfolio returns. Fortunately, ... Read More

Feed: R-bloggers. Author: R on Will Hipson. In this month’s post, I set out to create a visual network of emotions. Emotion Dynamics tells us that different emotions are highly interconnected, such that one emotion morphs into another and so on. I’ll be using a large dataset from an original study published in PLOS ONE by Trampe, Quoidbach, and Taquet (2015). Thanks to Google Dataset Search, I was able to locate this data. The data is collected from 11,000 participants who completed daily questionnaires on the emotions they felt at a given moment. The original paper is fascinating and I ... Read More