Specifying orderqty in add.rule()
Now that you have a grasp of the first set of arguments in the add.rule() function, it's time to move on to the more important arguments: the actual order being bought or sold! The orderqty argument in the ruleSignal specifies exactly how much of an asset you want to buy or sell, in numbers of shares.
However, one salient feature of the exit rule type is that you can reduce your position to zero instantly with the all argument (hence, exiting). This is the mechanism we will implement in this exercise.
This exercise is part of the course
Financial Trading in R
Exercise instructions
- The
add.rule()command from the previous exercise has been loaded into your workspace. - Specify that you'd like to reduce your position to zero by filling in the
orderqtyargument.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Fill in the orderqty argument in add.rule()
add.rule(strategy.st, name = "ruleSignal",
arguments = list(sigcol = "filterexit", sigval = TRUE, orderqty = "___",
ordertype = "market", orderside = "long",
replace = FALSE, prefer = "Open"),
type = "exit")