R mapply with named arguments

Question

One fear I have when using mapply in R is that I may mess up the order of arguments & hence unconsciously generate garbage results.

mydata<-data.frame(Temperature=foobar,Pressure=foobar2)
myfunction<-function(P,T)
{
....
}
mapply(FUN = myfunction,mydata$Temperature,mydata$Pressure)

Is there a way to utilize named arguments to avoid this sort of error via mapply?

Answer 1

If we need to match the function arguments, name the arguments for Map/mapply with the arguments of the function

mapply(FUN = myfunction,T=mydata$Temperature,P=mydata$Pressure)

We can apply the function directly instead of mapply though (based on the example provided below in my post)

do.call(myfunction, unname(mydata[2:1]))

data

mydata <- data.frame(Temperature = 1:5, Pressure = 16:20)
myfunction <- function(P, T) {P*5 + T*10}