CHAPTER 7
User-Created Functions
User-created functions often make the life of an R user easier. If a repetitive task involves several different lines of code, creating a function to do the task saves time.
Designing plots is one example of when a user-created function makes sense. Plots often take several lines of code, and the design of a plot is usually an interactive process. Creating a function to design the plot is often much easier than using the up arrow and changing lines.
Another example of when a user-created function is useful is when a user wants to try out a statistical technique that is not available in the R packages. Often the ...
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