From minka at stat.cmu.edu  Wed Jun 18 14:00:34 2003
From: minka at stat.cmu.edu (Tom Minka)
Date: Wed Jun 18 19:00:46 2003
Subject: [Rd] Re: [R] suggestion for make.names
In-Reply-To: <x28yrz925z.fsf@biostat.ku.dk>
References: <Pine.LNX.4.44.0306180655380.27947-100000@gannet.stats>
	<x28yrz925z.fsf@biostat.ku.dk>
Message-ID: <16112.39602.673756.553462@weird.stat.cmu.edu>

Peter Dalgaard BSA writes:
> It is not only non-trivial, but there is also a risk of running into
> logical inconsistencies in some applications of model formulas. E.g.
> in nls() and friends, the RHS is an arbitrary R expression and it
> might involve true character strings -- think
> 
> y~lsoda(start, "Time since inj.", "myfun", parms=c(a=1,b=2),
>         dllname="myfun.dll") 
> 
> where "Time since inj." could be a variable name, but the other two
> are literals.

Maybe I() could be used to escape the true character strings?

Tom


[Rd] Re: [R] suggestion for make.names
Tom Minka