How can I interpret the question?

[winnifred]

This is the function I created, how can I make the main argument a simple vector of numeric values?.

IndexofDispersion<- function(X, ...) {
return( var(X, ...)/mean(X,...))
}

[nirgrahamuk]

to run the function with a simple vector of numeric values you can do

IndexofDispersion(X=c(1,0,2,3,3.5))

the result will be 1.078947

[winnifred]

Thanks. I have another question. I created the function
IndexofDispersion<- function(X, ...) {
return( var(X, ...)/mean(X,...))
}
I have to test it on a data set like "horsekicks" but it is a data frame, so I get
Warning message:
In mean.default(X, ...) : argument is not numeric or logical: returning NA
What can i do?

[nirgrahamuk]

Im not familiar with horsekicks, would you run your function on any particular variable/column of that?