Version 0.4.0 of simstudy is now available on CRAN and GitHub. This update includes two enhancements (and at least one major bug fix). genOrdCat now includes an argument to generate ordinal data without an assumption of cumulative proportional odds...

by Robert A. Muenchen Introduction R-Instat is a free and open source graphical user interface for the R software that focuses on people who want to point-and-click their way through data science analyses. Written in Visual Basic, it is currently only available for Microsoft Windows. However, a Linux version is ...

RStudio Using Github is the popular method of version control in RStudio. I have struggled with managing Github with RStudio. In this section, I will put together pieces from different sources to fix your issues or get started with it. Sta...

I have recently moved from building this blog via the distill package to blogdown. The main reason for this is that, at the time of writing, distill does not support full RSS feeds for multiple articles, which is a requirement for linking my blog t...

One hundred thirty-four new packages made it to CRAN last December. Here are my “Top 40” picks in eight categories: Data, Genomics, Machine Learning, Medicine, Science, Statistics, Utilities, and Visualization. Data aurin v0.5.1: Implements an API for AURIN, Australia’s largest resource for accessing clean, integrated, spatially enabled and research-ready data ...

I’m constantly on the lookout for things I can use for future posts for this blog. My goal is usually two-fold. First, what is a tool or technique I want to try/learn and second is there an interesting data set that I can use with those tools. I’...

Introduction Automatic differentiation Automatic differentiation (AD) refers to the automatic/algorithmic calculation of derivatives of a function defined as a computer program by repeated application of the chain rule. Automatic differentiation plays an important role in many statistical computing problems, such as gradient-based optimization of large-scale models, where gradient calculation ...

At the end of June 2021, I released the greybox package version 1.0.0. This was a major release, introducing new functionality, but I did not have time to write a separate post about it because of the teaching and lack of free time. Finally, Christmas has arrived, and I could spend several ...

Setup Loading the R libraries and data set. # Loading libraries library(geomtextpath) # For adding text to ggplot2 curves library(tidytuesdayR) # For loading data set library(ggbeeswarm) # For creating a beeswarm plot library(tidyverse) # For the gg...

In chapter 17 “Parametric nonlinear models” of Bayesian Data Analysis1 by Gelman et al., the authors present an example of fitting a curve to a serial dilution standard curve and using it to estimate unknown concentrations. Below, I build t...

Even if this sounds incredible, yes, we can predict future recessions using a couple of time series, some simple econometric models, and … R !  The basic idea is that the slope of the yield curve is somewhat linked to the probability of future recessions. In other words, the difference between the ...

By Huey Fern Tay with Greg Page When are two variables too related to one another to be used together in a linear regression model? Should the maximum acceptable correlation be 0.7? Or should the rule of thumb be 0.8? There is actually no single, ‘one-size-fits-all’ answer to this question. As an ...

Tell us about yourself My name is Dattijo Murtala Makama, I am currently working as a Senior Software Engineer at the National Center for Artificial Intelligence and Robotics (NCAIR). I... The post Using the Local Dialect to Teach R Programming appeared first on R Consortium.

Services like Mailchimp and MailerLite make it easy to create stylish email campaigns. Their templating tools allow you to create elegant HTML messages which are personalised to the recipient. Wouldn’t it be cool if you could do something similar when sending emails from R? Well, with the latest version ...

For my handful of followers, you may have noticed something strange. Over the past two days, I released updates to all four of my packages on CRAN. I decided to practice what I preach and actively reduce dependency hell by moving from testhat to tinytest. I have been programming for ...

The {emayili} package for sending emails from R works well within a Shiny app. You just need to set it up right. I’ve added a simple demonstration script to the latest version of {emayili}. You’ll find it in the inst/shiny/send-message directory. Setup Probably the easiest way ...

(¿Quieres más detalles sobre el curso en español? Desplázate hacia abajo.) Hello everyone! This blog post is a bit different from usual posts in that I’d like to make a very exciting announcement about an upcoming course launch. Part of my vision...

The study of food webs is very relevant, considering the role these networks have in describing the transfer of energy and matter in the ecosystem (Thompson et al. 2012). As such, the evaluation of the robustness to species extinctions is an important step in any analysis evaluating food web stability. The ...