R-bloggers

Are you seeking faster R data processing and enhanced machine learning capabilities for massive datasets in databases? Look no further. Join us in our upcoming webinar to discover how Oracle... The post Webinar for R and Databases!  How Oracle Machine Learning for R Helps with ML and Massive Datasets appeared ...

#151–152PuzzlesAuthor: ExcelBIAll files (xlsx with puzzle and R with solution) for each and every puzzle are available on my Github. Enjoy.Puzzle #151Today we simplified log of people work. They just written down date and time of start and end. Not rea...

Introduction Linear versus logistic regression Univariate versus multivariate logistic regression Data Binary logistic regression in R Univariate binary logistic regression Quantitative independent variable Qualitative independent variable Multivariate binary logistic regression Interaction Model selection Quality of a model Validity of the predictions Accuracy Sensitivity and specificity AUC and ROC curve Reporting ...

Impala (Aepyceros melampus) female browsing Weeping Boer-Bean (Schotia brachypetala) leaves – CC-BY-SA by Bernard DUPONT webr allows R to run in the browser. Let’s play! Add webr to your quarto environment, in the terminal: quarto add coatless/quarto-webr Then, in the YAML header, add: engine: knitr filters: - "webr" webr: ...

Puzzles no. 374–378PuzzlesAuthor: ExcelBIAll files (xlsx with puzzle and R with solution) for each and every puzzle are available on my Github. Enjoy.Puzzle #374Palindromes are pretty common topic in our puzzles, but always there is little twist, and t...

A surprise I came to write this post because I was surprised by its findings. The seed for it came from a somewhat obscure source: the Tokyo.R slack channel. This is actually a fairly vibrant R community. In any case, there was a post by an R user s...

It was enjoyable to visualize the non-linear relationship with interaction and observe the corresponding changes in CATE. If one understands the underlying equation, it’s possible to easily obtain the ATE using calculus. Lastly, adopting Richard...

In statistics, there are a number of classic datasets that pop up in examples, tutorials, etc. There’s the infamous iris dataset (just type iris in your nearest R prompt), the Palmer penguins (the modern iris replacement), the titanic da...

A student recently asked me how exactly the R terra::extract() function worked when using method="bilinear" to get raster values for points. The help file rightly says that ‘With “bilinear” the returned values are interpolated from the values of the four … Continue reading →

The goal of cpp11armadillo is to provide a novel approach to use the Armadillo C++ library by using the header-only cpp11 R package and to simplify things for the end-user. The idea is to pass matrices/vectors from R to C++, write pure C++/Armadi...