Category: R

Feed: R-bloggers. Author: Roman Pahl. [This article was first published on Roman Pahl, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. The setup The RStudio notebook is a great interactive tool to build a statistical report. Being able to see statistics and graphs right on the fly probably has saved me countless hours, especially when building complex reports. However, one thing that has always bothered me was the way tables are displayed in ... Read More

Feed: R-bloggers. Author: Roman Pahl. Notation and naming File names File names end in .R and are meaningful about their content: Good: string-algorithms.R utility-functions.R Bad: foo.R foo.Rcode stuff.R Function names Preferrably function names consist of lowercase words separated by an underscore. Using dot (.) separator is avoided as this confuses with the use of generic (S3) functions. It also prevents name clashes with existing functions from the standard R packages. Camel-case style is also suitable especially for predicate functions returning a boolean value. Function names ideally start with verbs and describe what the function does. # GOOD create_summary() calculate_avg_clicks() find_string() ... Read More

Feed: R-bloggers. Author: mrtnj. Since version 1.0.0, released in September, the tidyr package has a new replacement for the gather/spread pair of functions, called pivot_longer/pivot_wider. (See the blog post about the release. It can do a lot of cool things.) Just what we needed, another pair of names for melt/cast, right? Yes, I feel like this might just be what we need! My journey started with reshape2, and after a bit of confusion, I internalised the logic of melt/cast. Look at this beauty: library(reshape2) fake_data This turns a data frame that looks like this … id variable1 variable2 1 1 ... Read More

Feed: R-bloggers. Author: Thinking inside the box. [This article was first published on Thinking inside the box , and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. A new minor release 0.3.3.7.0 of RcppEigen arrived on CRAN today (and just went to Debian too) bringing support for Eigen 3.3.7 to R. This release comes almost a year after the previous minor release 0.3.3.5.0. Besides the upgrade to the new upstream version, it brings a ... Read More

Feed: R-bloggers. Author: John Mount. [This article was first published on R – Win-Vector Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. Practical Data Science with R, 2nd Edition author Dr. Nina Zumel, with a fresh author’s copy of her book! Related 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: R Views. [This article was first published on R Views, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. In a previous post, we explored IPOs and IPO returns by sector and year since 2004. Today, let’s investigate how portfolios formed with those IPOs have performed. We will need to grab the price histories of the tickers, then form portfolios, then calculate their performance, and then rank those performances in some ... Read More

Feed: R-bloggers. Author: R | datawookie. [This article was first published on R | datawookie, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. The Durban EDGE (Economic Development and Growth in eThekwini) DataQuest was held at UKZN (Westville Campus) on 13 November 2019. Participants were tasked with creating something interesting and useful with the civic data on the new Durban EDGE Open Data Portal developed by Open Data Durban. These datasets were available: ... Read More

Feed: R-bloggers. Author: kjytay. When plotting an lm object in R, one typically sees a 2 by 2 panel of diagnostic plots, much like the one below: set.seed(1) x This link has an excellent explanation of each of these 4 plots, and I highly recommend giving it a read. Most R users are familiar with these 4 plots. But did you know that the plot() function for lm objects can actually give you 6 plots? It says so right in the documentation: We can specify which of the 6 plots we want when calling this function using the which option ... Read More

Feed: R-bloggers. Author: Michael Griebe. Week 11 Gold Mining and Fantasy Football Projection Roundup now available. The post Gold-Mining Week 11 (2019) appeared first on Fantasy Football Analytics. Related 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: Data Imaginist. [This article was first published on Data Imaginist, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. I’m happy to announce that farver 2.0 has landed on CRAN. This is a big releasecomprising of a rewrite of much of the internals along with a range of newfunctions and improvements. Read on to find out what this is all about. The case for farver The first version of farver really ... Read More