Articles by Andrea Spanò

Building views with R

March 7, 2017 | Andrea Spanò

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...]

Visual debugging with RStudio

July 22, 2013 | Andrea Spanò

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...]

Function Closures and S4 Methods

December 4, 2012 | Andrea Spanò

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...]

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