Re: [R] how to store recursive results

[X.H Chen]

Hi Patrick,

Thanks for your suggestion. I find your method works for the functions with 
integer paramters. For example,

If we have function f:
f<-function(i)
{
        if(i>1)
                i*f(i-1)
        else
                1
}

and then using:

ans <- vector("list", n)
for(i in 1:5) {
ans[[i]] <- f(i)
}

the ans should be:
[[1]]
[1] 1

[[2]]
[1] 2

[[3]]
[1] 6

[[4]]
[1] 24

[[5]]
[1] 120

But actually, we there is no such a "i" can be referrenced in f(), no 
parametric function for example, this will be a problem. Anyway, thanks a 
lot for your suggestions.

Cheers,

Xiaohui Chen

Dept. of Statistics
UBC, Canada




From: Patrick Burns <[EMAIL PROTECTED]>
To: "X.H Chen" <[EMAIL PROTECTED]>
Subject: Re: [R] how to store recursive results
Date: Fri, 22 Sep 2006 10:26:35 +0100

It isn't clear to me exactly what you are asking, but
I think that a list might be what you are after. Something
like:

ans <- vector("list", n)
for(i in 1:n) {
ans[[i]] <- ....
}

X.H Chen wrote:

Hi all,

How to store recursive resutls from a function for each step without using 
global operators <<-? Thanks ahead.

Xiaohui Chen

Dept. of Statistics
UBC, Canada

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