In database theory, a view is a table that actively depend on a data frame and on a query on it, so that if you change something in the data frame, the view will change accordingly. To have something similar to a view in R here we propose the ‘%____%’ operator, ... [Read more...]

How to apply one or many functions to one or many variables using dplyr: a practical guide to the use of summarise() and summarise_each() The post Aggregation with dplyr: summarise and summarise_each appeared first on MilanoR. [Read more...]

What is Ramarro? Ramarro is a book about advanced R pro [...] [Read more...]

Introduction From release 098.208 the last RStudio IDE comes with a visual debugger. Now debugging with R and RStudio becomes a simple and efficient task. This short post does not want to be a crash course: “debugging with R” nor … Continue reading → [Read more...]

This brief tutorial illustrates how to combine S4 object oriented capabilities with function closures in order to develop classes with built in methods. Thanks to Hadley Wickham for the great contribution of material and tutorials made available on the web and to Bill Venables and Stefano Iacus for their kind ... [Read more...]