[R] how modify object in parent.env

From: Vadim Ogranovich <vograno_at_evafunds.com>
Date: Wed 09 Mar 2005 - 10:36:14 EST


Hi,  

Is it possible to modify an object in the parent.env (as opposed to re-bind)? Here is what I tried:  

> x = 1:3

# try to modify the first element of x from within a new environment
> local(get("x", parent.env(environment()))[1] <- NA)
Error in eval(expr, envir, enclos) : Target of assignment expands to non-language object

# On the other hand retrieval works just fine
> local(get("x", parent.env(environment()))[1])
[1] 1

Thanks,
Vadim



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