From martin at martincmartin.com  Thu Oct  5 02:16:10 2006
From: martin at martincmartin.com (Martin C. Martin)
Date: Wed, 04 Oct 2006 20:16:10 -0400
Subject: [Rd] update.default evaluating in wrong environment?
Message-ID: <45244ECA.8070705@martincmartin.com>

Hi all,

update.default, which is the method used to update "lm" objects (among
others), extracts the "call" element from it's first argument, updates
it, then evaluates it in the parent.frame().  Shouldn't it be evaluated
in environment(formula(object)), if that's non-NULL?

I ask because I call "lm" from within a function, and the data argument
is a local variable of that function.  After that, I can't update the
model any more, since the new lm() call (the one evaled in
parent.frame()) can't find the data.

Best,
Martin




[Rd] update.default evaluating in wrong environment?
Martin C. Martin