Message-ID: <b0808fdc0612181006t5316da91pe6192333c03b2c94@mail.gmail.com>
Date: 2006-12-18T18:06:46Z
From: Antonio, Fabio Di Narzo
Subject: turning expression object to function
Dear all,
I have the following problem.
Given an expression object 'expr' containing a certain set of symbols
(say 'a', 'b', 'c'), I would like to translate the expression object
in an R function of, say, 'a', programmatically. Here an example of
what I mean.
Given:
> expr <- expression(a+b+c)
a call like:
> asFunctionOf(expr, 'a', list(b=1, c=2))
should return a function (not necessarly formally) equivalent to
> function(a) a+1+2
Some suggestions?
Best regards,
Antonio.