CHAPTER 8
How to Use a Function
Most functions require specific kinds of arguments, which must be input into the function correctly. For example, if a function calls for a matrix and a data.frame is input, the function will return an error. Since external tables are often read into the R workspace as data.frames, using a data.frame for a matrix is quite a common error. This chapter covers calling a function, using arguments, and accessing output.
Calling a Function
Calling a function is straightforward. The name of the function is entered at the R prompt followed by a set of parentheses which may or may not contain arguments, depending on the ...
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