[Rd] formula(CO2)

Gabor Grothendieck ggrothendieck at gmail.com
Mon Jul 16 15:28:50 CEST 2007

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.

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