Passing parameters in a user defined function to another function using ...

Thanks Ben.

I feel really dumb. I did enter '...' in my sample function in another version of this function. But I just realized I had only done it for the second occurrence of the sample function and not the first.

Dan


-----Original Message-----
From: Ben Tupper [mailto:btupper at bigelow.org] 
Sent: Monday, November 18, 2013 6:00 PM
To: Lopez, Dan
Cc: R help (r-help at r-project.org)
Subject: Re: [R] Passing parameters in a user defined function to another function using ...

Hi,

It's easy, just carry the arguments in '...' forward to where you expect to pass them along.


mynumbs<-function(x,y,z=5,...){
 numbs<-sort(sample(y,z, ...))
 for (i in 1:(x-1))
   numbs<-rbind(numbs,sort(sample(y,z, ...)))
 print(numbs)
}

Cheers,
Ben

Hi R Experts,

How do you get the ... to work in a user-defined function such as the one I have below?
For example if I want to pass replace=TRUE to the sample function.

# This is a sample function that generates x rows of z numbers out of y. Basically a lottery style data set.

mynumbs<-function(x,y,z=5,...){
 #x should be a scalar indicating number of rows  #y & z are passed to 
sample function  #in the future will add option to output as 
data.frame instead of matrix

 numbs<-sort(sample(y,z))
 for (i in 1:(x-1))
   numbs<-rbind(numbs,sort(sample(y,z)))
 print(numbs)
}

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