R-bloggers

Data science is often a case of brining the tools to the problems and data, instead of insisting on bringing the problems and data to the tools. To support cross-language data science we have been working on cross-language tools, documentation, and training. For example: vtreat data preparation package for supervised ... [Read more...]

The xml2relational Package Usually it is easier to work with data when you have them in a tabular, relational format. Often enough however, we only get the data in an object-oriented, NoSQL data format like XML or JSON. So there is a need to transform NoSQL data to something ... [Read more...]

I wrote a short blog (with R Code) on how to calculate corrected CIs for rho and tau using the Fisher z transformation.Serious Stats blog post on CIs for rho and tau [Read more...]

There are various methods for obtaining CIs for Kendall’s tau and Spearman’s rho. As the underlying data are unlikely to be bivariate normal (or else Pearson’s r would be used) bootstrapping is often recommended – but it doesn’t always perform that well (Bishara & Hittner, 2017). One could also ... [Read more...]

[Read more...]

[Read more...]

[Read more...]

[Read more...]

[Read more...]

Introduction Welcome to my series of blog posts about my data manipulation package, {poorman}. For those of you that don’t know, {poorman} is aiming to be a replication of {dplyr} but using only {base} R, and therefore be completely dependency free. What’s nice about this series is that ... [Read more...]

During the lockdown of the city, game nights are happening on Zoom a lot. I was asked if I could code up a bingo game—about an hour and a half before game time. I’m sure there’s probably some type of bingo game programmed in Shiny already, but ... [Read more...]

[Read more...]

Introduction Often we need to have optional arguments in R of Rcpp functions with default values. Sometimes, the default value for the optional parameters is set to be NULL. Rcpp provides the Nullable to set default value as to be R_NilValue ... [Read more...]

[Read more...]

The second video (following the announcement and last week’s shell colors) is up in the stil new T^4 series of video lightning talks with tips, tricks, tools, and toys. Today we cover customizing shell prompts. The slides are available here... [Read more...]

[Read more...]

In contrast to many other programming languages, R has no native switch-case statement. Often, however, it is useful to have an efficient way of testing multiple, similar conditions while avoiding nested if-else constructs which make the code less clear and readable. The switchcase package offers a switch-case construct for R. ... [Read more...]

Whenever we talk about Data Collection, We usually think about Web Scraping. What’s often forgotten is that a lot of websites / web apps usually offer API to access their data in the right way. This video tutorial explains how you can use httr package to use GET requests (REST ... [Read more...]

[Read more...]

Armadillo is a powerful and expressive C++ template library for linear algebra aiming towards a good balance between speed and ease of use with a syntax deliberately close to a Matlab. RcppArmadillo integrates this library with the R environment and... [Read more...]