On Sep 20, 2009, at 10:59 AM, manta wrote:


Good afternoon,
I know it is a simple question but I cannot figure out how to solve this
issue.
I have a function that calculate two objects. I would like to choose
everytime about the tree object, with default to not show it.

I cannot understand that. Perhaps you can try again to tell us what you want to do with tree?


OP<-function(S=100,X,sigma,mu=0,r=0,time=1,n)
{
        value=(S)       
        ......                  
        tree = matrix(rev(tree), byrow = FALSE, ncol = n + 1)   

... where did tree first get defined?

        return(value[1])

... do you really want to return only value[1] _and_not_ tree? If you exit the function this way, tree will get lost.


}


David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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