From ggrothendieck at gmail.com  Mon Jul 16 15:28:50 2007
From: ggrothendieck at gmail.com (Gabor Grothendieck)
Date: Mon, 16 Jul 2007 09:28:50 -0400
Subject: [Rd] formula(CO2)
Message-ID: <971536df0707160628g37e301e1wf81eaee0b7feb841@mail.gmail.com>

The formula attribute of the builtin CO2 dataset seems a bit strange:

> formula(CO2)
Plant ~ Type + Treatment + conc + uptake

What is one supposed to do with that?  Certainly its not suitable for
input to lm and none of the examples in ?CO2 use the above.



[Rd] formula(CO2)
Gabor Grothendieck