Function help and documentation
When you don't know how to use a function, or don't know what arguments it takes, where do you turn? Luckily for you, R has built in documentation. For example, to get help for the names()
function, you can type one of:
?names
?names()
help(names)
These all do the same thing; they take you straight to the help page for names()
!
In the DataCamp console, this takes you to the RDocumentation site to get help from there, but the information is all the same!
Below, you will explore the documentation for a few other functions.
This exercise is part of the course
Intermediate R for Finance
Exercise instructions
- Use
?
to look at the documentation forsubset()
. - Use
?
to look at the documentation forSys.time()
.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Look at the documentation for subset
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# Look at the documentation for Sys.time
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