R-bloggers

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...]

A minor routine update 0.0.4 of gettz arrived on CRAN overnight. gettz provides a possible fallback in situations where Sys.timezone() fails to determine the system timezone. That happened when e.g. the file /etc/localtime somehow is not a link into ... [Read more...]

One widely used graphical plot to assess the quality of a machine learning classifier or the accuracy of a medical test is the Receiver Operating Characteristic curve, or ROC curve. If you want to gain an intuition and see how they can be easily created with base R read on! ... [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...]

Introduction Hello all and welcome to another edition of the poorman series of blog posts. In this series I am discussing my progress in writing a base R equivalent of dplyr. What’s nice about this series is that if you’re not into poorman and would prefer just to ... [Read more...]

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# Libraries packages 0) { install.packages(setdiff(packages, rownames(installed.packages()))) } invisible(lapply(packages, library, character.only = TRUE)) knitr::opts_chunk$set(comment=NA, fig.width=12, fig.height=8, out.width = '100%') Introduction This post is a continuation Tabulizer and pdftools Together as Super-powers - Part 2 where we showed how combining pdftools ... [Read more...]

Introduction Data exploration Summary of the variables Missing values imbalanced data building the recipe Building the workflow random forest model model training model evaluation Model tuning: logistic regression model Session information Introduction The super easy way, at least for me, to deploy machine learning models is by making use of ... [Read more...]

# Libraries packages 0) { install.packages(setdiff(packages, rownames(installed.packages()))) } invisible(lapply(packages, library, character.only = TRUE)) knitr::opts_chunk$set(comment=NA, fig.width=12, fig.height=8, out.width = '100%') Introduction In Evaluating Mass Muni CAFR Tabulizer Results - Part 3, we discovered that we were able to accurately extract ~95% of ... [Read more...]

inSilecoMisc inSilecoMisc is an R 📦 I have been maintaining for four years now. It was originally designed as a convenient way to share handy functions. Instead of stacking them in my .Rprofile, I created a package and made it available on GitHub. inSilecoMisc is therefore a set of miscellaneous functions, ... [Read more...]

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rOpenSci Software Peer Review’s guidance has been compiled in an online book for more than one year now. We’ve just released its fourth version. To find out what’s new in our dev guide 0.4.0, you can read the changelog, or this blog post for more digested information. Note ... [Read more...]

Today I interviewed Dr. Julia Silge, the creator of janeaustenr::, tidytext::, qualtRics::, and author of Text Mining with R. I’m still recovering from a hand surgery, and this time the interview was done by using a voice-to-text app and email. ... [Read more...]

We often run R interactively, through Rstudio or in the terminal. But you can also run Rscripts without manual intervention. Using Rscript. But where does the output go? Warning: This post is very linux/unix (macos) centred, I don’t know how this works in Windows. Also I’m using ... [Read more...]

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Previously in this series: The “lost boarding pass” puzzle The “deadly board game” puzzle The “knight on an infinite chessboard” puzzle The “largest stock profit or loss” puzzle The “birthday paradox” puzzle The “Spelling Bee honeycomb” puzzle Feller’s “coin-tossing” puzzle I love 538’s Riddler column, and the April 10 puzzle ... [Read more...]