March 2018

Comparing additive and multiplicative regressions using AIC in R

March 22, 2018 | Ivan Svetunkov

One of the basic things the students are taught in statistics classes is that the comparison of models using information criteria can only be done when the models have the same response variable. This means, for example, that when you have \(\log(y_t)\) and calculate AIC, then this value ... [Read more...]

Machine Learning Modelling in R : : Cheat Sheet

March 22, 2018 | The R Trader

I came across this excellent article lately “Machine learning at central banks” which I decided to use as a basis for a new cheat sheet called Machine Learning Modelling in R. The cheat sheet can be downloaded from RStudio cheat sheets repository. As the R ecosystem is now far too ... [Read more...]

Plotting and subsetting stars objects

March 21, 2018 | Edzer Pebesma

Summary Plots of raster data Subsetting Conversions: raster, spacetime Easier set-up Earlier stars blogs [view raw Rmd] Summary This is the second blog on the stars project, an R-Consortium funded project for spatiotemporal tidy arra...

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Introducing the CGPfunctions package – March 22, 2018

March 21, 2018 | Chuck Powell

Overview This package includes functions that I find useful for teaching statistics as well as actually practicing the art. They typically are not “new” methods but rather wrappers around either base R or other packages and concepts I’m trying... [Read more...]

Introducing the CGPfunctions package

March 21, 2018 | Chuck Powell

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spacings on a torus

March 21, 2018 | xi'an

While in Brussels last week I noticed an interesting question on X validated that I considered in the train back home and then more over the weekend. This is a question about spacings, namely how long on average does it take to cover an interval of length L when drawing ... [Read more...]

R Tip: Break up Function Nesting for Legibility

March 21, 2018 | John Mount

There are a number of easy ways to avoid illegible code nesting problems in R. In this R tip we will expand upon the above statement with a simple example. At some point it becomes illegible and undesirable to compose operations by nesting them, such as in the following code. ...

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Automate R processes

March 21, 2018 | Super User

Last week we updated the cronR R package and released it to CRAN allowing you to schedule any R code on whichever timepoint you like. The package was updated in order to comply to more stricter CRAN policies regarding writing to folders. Along the lines, the RStudio add-in of the ... [Read more...]

Regression Analysis Essentials For Machine Learning

March 21, 2018 | Easy Guides

Regression analysis consists of a set of machine learning methods that allow us to predict a continuous outcome variable (y) based on the value of one or multiple predictor variables (x). Briefly, the goal of regression model is to build a mathematical equation that defines y as a function of ... [Read more...]

ggplot2: How Geoms & Aesthetics ≈ Whipped Cream

March 21, 2018 | tylerrinker

In this post I have a few goals: 1. Become (re-)familiar with available geoms 2. Become (re-)familiar with aesthetic mappings in geoms (stroke who knew?) 3. Answer these questions: How often do various geoms appear and how often do they … Continue reading →

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Power analysis for longitudinal multilevel models: powerlmm 0.2.0 is now out on CRAN

March 21, 2018 | Kristoffer Magnusson

My R packge powerlmm 0.2.0 is now out on CRAN. It can be installed from CRAN https://cran.r-project.org/package=powerlmm or GitHub https://github.com/rpsychologist/powerlmm. Changes in version 0.2.0 New features Analytical power calculations now suppo... [Read more...]

NIMBLE webinar Friday April 13

March 20, 2018 | Chris Paciorek

We’ll be presenting a webinar on NIMBLE, hosted by the Eastern North America Region of the International Biometric Society. Details are as follows. Programming with hierarchical statistical models: An introduction to the BUGS-compatible NIMBLE system for MCMC and more Friday, April 13, 2018 11:00 a.m. – 1:00 p.m. EST Must register before ...

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Learning some tough lessons!

March 20, 2018 | Jamie Lendrum

It’s been a while since I’ve posted - mainly because I got myself into a mess with Git and I’ve been putting off trying to sort it out. I’ve been wanting to post about htmlwidgets for a while now, and in my naivity I thought I’... [Read more...]

A Baseball Dashboard in Time for Opening Weekend (part two)

March 20, 2018 | Analytical Endeavors

JAWS Calculation Weighting Positions and Averages Create Dataframes for Visuals Save Objects Conclusion References @ctrent I’ve always thought that it’d be fun to debate the @Reds HOF like the real one. Set a high , but debatable, bar. Bring on the JAWS— Craig Wales (@C_Dubs1) August 22, 2017 it would ... [Read more...]

Installing R and R studio

March 20, 2018 | Dominique Makowski

Guide Install R and R Studio Go here: https://cloud.r-project.org/ Download the last version for your OS Install it Go here: https://www.rstudio.com/products/rstudio/download/#download Download the right version for your OS Install it Start R studio Install the psycho package If you’ve ... [Read more...]

Multiple Versions of R

March 20, 2018 | R Views

Data scientists prefer using the latest R packages to analyze their data. To ensure a good user experience, you will need a recent version of R running on a modern operating system. If you run R on an production server – and especially if you use RStudio Connect – plan to support ...

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R and Docker

March 20, 2018 | David Smith

If you regularly have to deal with specific versions of R, or different package combinations, or getting R set up to work with other databases or applications then, well, it can be a pain. You could dedicate a special machine for each configuration you need, I guess, but that's expensive ... [Read more...]

Building the Olympics blog: tidy data preparation

March 20, 2018 | Edwin Thoen

Last week I did an analysis of gold diggers at the Olympics. Here I take you along how I scraped the data from wikepedia and subsequently used the tools of the tidyverse to get the data in a format in which they can be analyzed. You are invited to copy-paste ... [Read more...]

Introducing tabr: guitar tabs with R

March 20, 2018 | Matt Leonawicz

This post introduces a new R package I am working on called tabr for creating guitar tablature (“tabs”) from R code. The tabr package provides programmatic music notation and a wrapper around LilyPond for creating quality guitar tablature. [Click here for original post] (in process of switching where I post ...