[R] external variable by inside-function routines modifications

[David Winsemius]

On Oct 8, 2009, at 1:14 PM, devol wrote:

>
> Dear all,
>
>  could you please advice whether it is possible somehow to modify an
> external (from the point of some function view) variable by some
> function-internal operators. For example
>
>> var=1
>> foo<-function(var){var=var+1}
>> foo(var)
>> var
> [1] 1

Use functions the way they are designed to be used in R ... to return  
values:

 > var <- foo(var)
 > var
[1] 2
 >
>
> but the goal is to get the var equal to 2 in this specific case.
>
> Thanks!
> -- 
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>
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David Winsemius, MD
Heritage Laboratories
West Hartford, CT