Counting Arguments In R

Kevin Feasel



Neil Saunders shares methods for interrogating argument lists in R:

“Some R functions have an awful lot of arguments”, you think to yourself. “I wonder which has the most?”

It’s not an original thought: the same question as applied to the R base package is an exercise in the Functions chapter of the excellent Advanced R. Much of the information in this post came from there.

There are lots of R packages. We’ll limit ourselves to those packages which ship with R, and which load on startup. Which ones are they?

It’s a fun exercise and helpful for learning a bit more about how to work with arguments when metaprogramming in R.

Related Posts

Using Plotly In Power BI

Kara Annanie shows how you can R integration in Power BI to push Plotly visuals to users: In the example, above, we’ve created a line chart visualization using Plotly and we’ve decided to put labels on the graph, but only on the first and last points of the line graph. This graph would be particularly […]

Read More

Inline Operators In R With wrapr

John Mount shows how to use inline operators in R with the wrapr package: The above code is assuming you have the wrapr package attached via already having run library('wrapr'). Notice we picked R-related operator names. We stayed away from overloading the + operator, as the arithmetic operators are somewhat special in how they dispatch in R. The goal wasn’t […]

Read More


June 2018
« May Jul »