The R help function
In R information about individual functions can be found on the function manual page including:
description: what the function does
usage: shows the syntax of the function including all arguments - this is a generalised form of how you would use the function
arguments: of the function. These are all the things you can customise in the function
details and values: give some additional information about the function
examples: of how the function is run. You will be able to copy and paste these examples into R/RStudio to run yourself
You can access the help page of a function in a number of ways
To open up the help page within R/RStudio using the help command :
help(insert_function_name)
# an example for print()
help(print)
an equivalent command is to use the help operator
?:
?(print)
both commands will open up the print function in a web page in windows (or the manual page inside the terminal in Linux)
In your script, type and run
Print()
print("Hello world")
#output below
> print("hello world")
[1] "hello world"Information: Print()
According to the manual, the print command has the usage
print(x..)Function_name(arg1)
where x is “Hello world”
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