October 2018

Make a trailer for your slidedeck with av

October 6, 2018 | Posts on Maëlle's R blog

rOpenSci post-doc hacker Jeroen Ooms has just released a cool new package, av, that he wrote “will become the video counterpart of the magick package which [rOpenSci uses] for working with images.”. av provides bindings to the FFmepg libraries for editing videos. It’s already become a renderer for gganimate ... [Read more...]

Analyzing the Greatest Strikers in Football II: Visualizing Data

October 6, 2018 | schochastics

This is the second part of Analyzing the Greatest Strikers in Football. In the first part, we created the function get_goals() which allows us to conveniently scrape detailed information of players career goals from transfermarkt.co.uk. In this part, we are going to explore the data. 
library(tidyverse) # for data wrangling
library(lubridate) # for date formats
library(ggimage)   # adding images to ggplot
library(patchwork) # attaching ggplot objects
library(viridis)   # viridis color schemes
We ... [Read more...]

Quick Significance Calculations for A/B Tests in R

October 6, 2018 | John Mount

Introduction Let’s take a quick look at a very important and common experimental problem: checking if the difference in success rates of two Binomial experiments is statistically significant. This can arise in A/B testing situations such as online advertising, sales, and manufacturing. We already share a free video ... [Read more...]

RcppCCTZ 0.2.4

October 6, 2018 | Thinking inside the box

A new release 0.2.4 of RcppCCTZ is now on CRAN. RcppCCTZ uses Rcpp to bring CCTZ to R. CCTZ is a C++ library for translating between absolute and civil times using the rules of a time zone. In fact, it is two libraries. One for dealing with civil tim... [Read more...]

Combining automatically factor levels in R

October 6, 2018 | arthur charpentier

Each time we face real applications in an applied econometrics course, we have to deal with categorial variables. And the same question arise, from students : how can we combine automatically factor levels ? Is there a simple R function ? I did upload a few blog posts, over the pas years. But ...
[Read more...]

Working with panel data in R: Fixed vs. Random Effects (plm)

October 6, 2018 | Michael Grogan

Working with panel data in R: Fixed vs. Random Effects CategoriesAdvanced Modeling Tags Linear Regression Logistic Regression R Programming Video Tutorials Panel data, along with cross-sectional and time series data, are the main data types that we encounter when working with regression analysis. Types of data Cross-Sectional: Data collected at ...
[Read more...]

Adding strings in R

October 5, 2018 | Jonathan Carroll

This started out as a “hey, I wonder…” sort of thing, but as usual, they tend to end up as interesting voyages into the deepest depths of code, so I thought I’d write it up and share. Shoutout to [@coolbutuseless](https://twitter.com/coolbutuseless) for proving that a little ...
[Read more...]

Image clustering with Keras and k-Means

October 5, 2018 | Dr. Shirin Glander

A while ago, I wrote two blogposts about image classification with Keras and about how to use your own models or pretrained models for predictions and using LIME to explain to predictions. Recently, I came across this blogpost on using Keras to extract learned features from models and use those ...
[Read more...]

A few upcoming R conferences

October 5, 2018 | David Smith

Here are some conferences focused on R taking place in the next few months: Oct 26: Nor'eastR Conference (Providence, RI). A one-day R conference, organized by grassroots R community members in the Northeastern US. Oct 27: SatRdays Belgrade (Serbia). Another city joins the popular SatRDays series of one-day, community led conferences. Nov 7: ... [Read more...]

Adding strings in R

October 5, 2018 | Jonathan Carroll

This started out as a “hey, I wonder…” sort of thing, but as usual, they tend to end up as interesting voyages into the deepest depths of code, so I thought I’d write it up and share. Shoutout to @coolbutuseless...Continue Reading →
[Read more...]

See us at ACoP 9 on Booth 27!

October 5, 2018 | Mango Solutions

Mango Solutions are pleased to be exhibiting at ACoP 9 on 7-10th October at the Loews Coronado Bay Resort near San Diego, CA and welcome our customers and conference attendees to booth 27 where we will be showcasing our PK/PD model informed drug development tool – Navigator Workbench. Navigator Workbench provides ... [Read more...]

7 steps that make custom inputs in shiny easy

October 5, 2018 | Sebastian Wolf

7 easy steps to custom inputs in shiny A step by step guide on how to include custom inputs into R Shiny. This guide is going through an example of a custom input build from jQuery. After the tutorial you will be able to: Build your own front-end elements in shiny ...
[Read more...]

One tweet leads to some R work about births

October 4, 2018 | Assorted things

This new post was born because of my curiosity about this tweet: Italy 1960-2014: Big drop in annual number of births, big increase in ages of mothers. #Italy #fertility pic.twitter.com/QGT0AnA3IU — Carl Schmertmann (@CSchmert) 7 de febrero de 2018 Sometimes you just feel the urge to recreate some ...
[Read more...]

Spookify: Halloween Name Generation in R

October 4, 2018 | Posts on Maëlle's R blog

It’s October, time for spooky Twitter names! If you’re on this social media platform, you might have noticed some of your friends switching their names to something spooky and punny. Last year I was “Maelstrom Salmon”, which I find scary but is arguably not that funny. Anyhow, what ... [Read more...]
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